Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
JOIN GEARS TO SAVE 5%
Shop All Brands
Shopping for

2021 GMC Sierra 3500 HD

X
  2. Auto Parts
  3. Driveline and Axles
  4. Hardware
  5. Differential Pinion Shim for 2021 GMC Sierra 3500 HD

2021 GMC Sierra 3500 HD: Differential Pinion Shim


Displaying 1 to 14 (of 14 products)

ACDelco 12471548 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.38MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471549 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.50MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471550 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.63MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471551 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.76MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471552 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.88MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471553 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.00MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471554 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.42R(GU6),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.13MM THK OD 110.25
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471555 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.56MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471556 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.69MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471558 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
0.91MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471560 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.07MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471561 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.12MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471562 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.22MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle

ACDelco 12471563 Differential Side Gear Shim
for 2021 GMC Sierra 3500 HD

ACDelco
Avail:
0 in Stock
 OUT OF STOCK
View Product
EnginePer VehicleFit NotesFitment Notes
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 82.2 In.
Wheel Base 158.9 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length 98.2 In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 141.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 146.3 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 162.5 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 170.8 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 172.0 In.

1 Per Vehicle
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo
 
1
 
3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.
 
2021 GMC Sierra 3500 HD equipped with
6.6L V8 Gas OHV,
6.6L V8 Flex OHV,
6.6L V8 Diesel OHV Turbo 3.73R(GT4),POSITRACTION L/SLIP R/AXL(G80)
1.32MM THK OD 63.00
Bed Length N/R In.
Wheel Base 176.7 In.

1 Per Vehicle
Displaying 1 to 14 (of 14 products)