Brands Vehicles

Lowest Prices

Free Returns

Online Since 2009

JOIN GEARS TO SAVE 5%

ACDelco 4278 Differential Pinion Seal


Brand:	ACDelco
Part Number:	4278
UPC:	00808709437635
Weight:	0.16 lbs
Condition:	New

Availability:	0 in Stock
	OUT OF STOCK

Product Information

Description:

Get the ACDelco 4278 Differential Pinion Seal for your vehicle. Buy now and secure your purchase online!

ACDelco Gold (Professional) Differential Pinion Seals are a high quality alternative to Original Equipment (OE) parts. They help prevent leakage of lubricant and prevent outside contamination from entering the differential pinion. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional or ACDelco Advantage. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
Premium aftermarket replacement part
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional

Specifications:

Bore Diameter (in):

3.095 in

Bore Diameter (mm):

78.61 mm

Inside Diameter:

1.81 in.

Inside Diameter:

46.02 mm

Material:

Fluoro-Elastomer

Outside Diameter:

3.4 in.

Outside Diameter:

86.41 mm

Programming Required:

Thickness:

0.49 in.

Thickness:

12.32 mm

Universal Or Specific Fit:

Specific

Country of Origin:

Select a vehicle to narrow ACDelco 4278 Differential Pinion Seal fitment info!

Last Updated: 04/30/2024

Years

Vehicle

Per Vehicle

Position

Fit Notes

Fitment Notes

Ford E-150

5.4L V8 CNG SOHC,
5.4L V8 LPG SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford E-150

5.4L V8 CNG SOHC,
5.4L V8 LPG SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Flex SOHC,
5.4L V8 Flex SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford E-150

4.6L V8 Flex SOHC,
5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

2003

Ford E-150

4.2L V6 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150

4.2L V6 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

2003

Ford E-150 Club Wagon

4.2L V6 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150 Club Wagon

4.2L V6 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Econoline

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150 Econoline

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Econoline Club Wagon

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-150 Econoline Club Wagon

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-250

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-250

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

2003

Ford E-250

4.2L V6 Gas OHV

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-250

4.2L V6 Gas OHV

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford E-250 Econoline

4.2L V6 Gas OHV,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-250 Econoline

4.2L V6 Gas OHV,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford E-250 Econoline

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-250 Econoline

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

2003

Ford E-350 Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

2003

Ford E-350 Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

1998

Ford E-350 Econoline

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

1998

Ford E-350 Econoline

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline

7.3L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

7.3L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline

7.3L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

7.3L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline

6.9L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

6.9L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline

6.9L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

6.9L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

1985

Ford E-350 Econoline

4.9L L6 LPG OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline

4.9L L6 LPG OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

1985

Ford E-350 Econoline

4.9L L6 LPG OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline

4.9L L6 LPG OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

1996

Ford E-350 Econoline Club Wagon

4.9L L6 Bi-Fuel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

4.9L L6 Bi-Fuel OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

1996

Ford E-350 Econoline Club Wagon

4.9L L6 Bi-Fuel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

4.9L L6 Bi-Fuel OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

7.3L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Econoline Club Wagon

6.9L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

Ford E-350 Econoline Club Wagon

6.9L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-350 Econoline Club Wagon

6.9L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear
Viton Type

Ford E-350 Econoline Club Wagon

6.9L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-350 Super Duty

5.4L V8 Gas SOHC,
6.0L V8 Diesel OHV Turbo,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-350 Super Duty

5.4L V8 Gas SOHC,
6.0L V8 Diesel OHV Turbo,
6.8L V10 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

2004

Ford E-350 Super Duty

5.4L V8 CNG SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-350 Super Duty

5.4L V8 CNG SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford E-450 Econoline Super Duty

5.4L V8 CNG SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford E-450 Econoline Super Duty

5.4L V8 CNG SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-450 Econoline Super Duty

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford E-450 Econoline Super Duty

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

2000

Ford E-450 Econoline Super Duty

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford E-450 Econoline Super Duty

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

1999

Ford Econoline Super Duty

5.4L V8 CNG SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford Econoline Super Duty

5.4L V8 CNG SOHC

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

1999

Ford Econoline Super Duty

5.4L V8 CNG SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 9.25in Diameter Ring Gear

Ford Econoline Super Duty

5.4L V8 CNG SOHC,
6.8L V10 Gas SOHC,
7.3L V8 Diesel OHV Turbo

Rear Gold
with 9.25in Diameter Ring Gear

1 Per Vehicle

Ford Econoline Super Duty

6.8L V10 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford Econoline Super Duty

6.8L V10 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford Econoline Super Duty

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford Econoline Super Duty

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford Econoline Super Duty

5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford Econoline Super Duty

5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

1996

Ford Econoline Super Duty

5.8L V8 Gas OHV,
7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford Econoline Super Duty

5.8L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford Excursion

6.0L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

Ford Excursion

6.0L V8 Diesel OHV Turbo

Rear Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford Excursion

6.0L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.5in Diameter Ring Gear
Viton Type

Ford Excursion

6.0L V8 Diesel OHV Turbo

Rear Gold
with 10.5in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford Excursion

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

Ford Excursion

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford Excursion

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear
Viton Type

Ford Excursion

5.4L V8 Gas SOHC,
6.8L V10 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford Excursion

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

Ford Excursion

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford Excursion

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.5in Diameter Ring Gear
Viton Type

Ford Excursion

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.5in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford Expedition

3.5L V6 Gas DOHC Turbo

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford Expedition

3.5L V6 Gas DOHC Turbo

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford Expedition

5.4L V8 Flex SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear
with 3.31 Axle Ratio

Ford Expedition

5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear
with 3.31 Axle Ratio

1 Per Vehicle

Ford Expedition

5.4L V8 Flex SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear
with 3.73 Axle Ratio

Ford Expedition

5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear
with 3.73 Axle Ratio

1 Per Vehicle

Ford Expedition

5.4L V8 Flex SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford Expedition

5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford Expedition

5.4L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford Expedition

5.4L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford Expedition

4.6L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford Expedition

4.6L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F Super Duty

7.3L V8 Diesel OHV Turbo

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F Super Duty

7.3L V8 Diesel OHV Turbo

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F Super Duty

7.5L V8 Gas OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F Super Duty

7.5L V8 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F Super Duty

7.3L V8 Diesel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F Super Duty

7.3L V8 Diesel OHV

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.5L V6 FULL HYBRID EV-Gas FHEV DOHC Turbo

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.5L V6 FULL HYBRID EV-Gas FHEV DOHC Turbo

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.3L V6 Flex DOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.3L V6 Flex DOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

2.7L V6 Gas DOHC Turbo

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

2.7L V6 Gas DOHC Turbo

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.5L V6 Gas DOHC Turbo,
5.0L V8 Flex DOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.5L V6 Gas DOHC Turbo,
5.0L V8 Flex DOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.0L V6 Diesel DOHC Turbo

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.0L V6 Diesel DOHC Turbo

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.5L V6 Flex DOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.5L V6 Flex DOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

2014

Ford F-150

3.7L V6 CNG DOHC,
3.7L V6 LPG DOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.7L V6 CNG DOHC,
3.7L V6 LPG DOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

3.7L V6 Flex DOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

3.7L V6 Flex DOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

6.2L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

6.2L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

5.4L V8 Flex SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.6L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

4.6L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

5.4L V8 Flex SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford F-150

5.4L V8 Flex SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.2L V6 Gas OHV

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford F-150

4.2L V6 Gas OHV

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.2L V6 Gas OHV

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

4.2L V6 Gas OHV

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear

Ford F-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford F-150

5.4L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

5.4L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
5.4L V8 Gas SOHC Supercharged

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC,
5.4L V8 Gas SOHC Supercharged

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.2L V6 Gas OHV,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

4.2L V6 Gas OHV,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

1999

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 Gas SOHC,
5.4L V8 Gas SOHC Supercharged

1 Rear

Gold
9.75 w/ 3.00 Pinion Brg.

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 Gas SOHC,
5.4L V8 Gas SOHC Supercharged

Rear Gold
9.75 w/ 3.00 Pinion Brg.

1 Per Vehicle

1998

Ford F-150

5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

2004

Ford F-150 Heritage

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F-150 Heritage

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

2004

Ford F-150 Heritage

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

1 Rear

Gold
with 9.75in Diameter Ring Gear

Ford F-150 Heritage

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC Supercharged

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

1999

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

1999

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.5in Diameter Ring Gear
Viton Type

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 Bi-Fuel SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford F-250

5.4L V8 Bi-Fuel SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F-250

5.4L V8 Bi-Fuel SOHC

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F-250

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

Ford F-250

4.9L L6 Bi-Fuel OHV

1 Rear

Gold
with 10.25in Diameter Ring Gear

Ford F-250

4.9L L6 Bi-Fuel OHV

Rear Gold
with 10.25in Diameter Ring Gear

1 Per Vehicle

See More Fitments on Page 2 - or - Select Your Vehicle Above

Customers who bought ACDelco 4278 Differential Pinion Seal also purchased

Timken NP434567 Differential Pinion Race

ACDelco 4278 Differential Pinion Seal

Product Information

Description:

Features and Benefits:

Specifications:

Select a vehicle to narrow ACDelco 4278 Differential Pinion Seal fitment info!

Ford E-150 5.4L V8 CNG SOHC,5.4L V8 LPG SOHC

1

Rear

Goldwith 9.75in Diameter Ring Gear

Ford E-150

5.4L V8 CNG SOHC,5.4L V8 LPG SOHC Rear Goldwith 9.75in Diameter Ring Gear 1 Per Vehicle

Ford E-150 4.6L V8 Flex SOHC,5.4L V8 Flex SOHC

1

Rear

Goldwith 9.75in Diameter Ring Gear

Ford E-150

4.6L V8 Flex SOHC,5.4L V8 Flex SOHC Rear Goldwith 9.75in Diameter Ring Gear 1 Per Vehicle

Ford E-150 4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 9.75in Diameter Ring Gear

Ford E-150

4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 9.75in Diameter Ring Gear 1 Per Vehicle

Ford E-150 4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear fluoroelastomer

Ford E-150

4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear fluoroelastomer 1 Per Vehicle

Ford E-150 4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150

4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-150 4.2L V6 Gas OHV

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150

4.2L V6 Gas OHV Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-150 Club Wagon 4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear fluoroelastomer

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear fluoroelastomer 1 Per Vehicle

Ford E-150 Club Wagon 4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-150 Club Wagon 4.2L V6 Gas OHV

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150 Club Wagon

4.2L V6 Gas OHV Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-150 Econoline 4.2L V6 Gas OHV,4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150 Econoline

4.2L V6 Gas OHV,4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-150 Econoline Club Wagon 4.2L V6 Gas OHV,4.6L V8 Gas SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.25in Diameter Ring Gear Viton Type

Ford E-150 Econoline Club Wagon

4.2L V6 Gas OHV,4.6L V8 Gas SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.25in Diameter Ring Gear Viton Type 1 Per Vehicle

Ford E-250 4.6L V8 Gas SOHC,5.4L V8 CNG SOHC,5.4L V8 Gas SOHC

1

Rear

Goldwith 10.5in Diameter Ring Gear

Ford E-250

4.6L V8 Gas SOHC,5.4L V8 CNG SOHC,5.4L V8 Gas SOHC Rear Goldwith 10.5in Diameter Ring Gear 1 Per Vehicle

Ford E-250 4.2L V6 Gas OHV

1

Ford E-150

5.4L V8 CNG SOHC,
5.4L V8 LPG SOHC

Gold
with 9.75in Diameter Ring Gear

5.4L V8 CNG SOHC,
5.4L V8 LPG SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Flex SOHC,
5.4L V8 Flex SOHC

Gold
with 9.75in Diameter Ring Gear

4.6L V8 Flex SOHC,
5.4L V8 Flex SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 9.75in Diameter Ring Gear

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 9.75in Diameter Ring Gear

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-150

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150

4.2L V6 Gas OHV

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.2L V6 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
fluoroelastomer

1 Per Vehicle

Ford E-150 Club Wagon

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Club Wagon

4.2L V6 Gas OHV

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.2L V6 Gas OHV

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Econoline

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-150 Econoline Club Wagon

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Gold
with 10.25in Diameter Ring Gear
Viton Type

4.2L V6 Gas OHV,
4.6L V8 Gas SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.25in Diameter Ring Gear
Viton Type

1 Per Vehicle

Ford E-250

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Gold
with 10.5in Diameter Ring Gear

4.6L V8 Gas SOHC,
5.4L V8 CNG SOHC,
5.4L V8 Gas SOHC

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle

Ford E-250

4.2L V6 Gas OHV

Gold
with 10.5in Diameter Ring Gear

4.2L V6 Gas OHV

Rear Gold
with 10.5in Diameter Ring Gear

1 Per Vehicle