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  2. Auto Parts
  3. Belts and Cooling
  4. Accessory Drive Belt System Components
  5. Drive Belt Tensioner Assembly
  6. ACDelco 38503

ACDelco 38503 Drive Belt Tensioner Assembly

ACDelco 38503 Drive Belt Tensioner Assembly Image 1
ACDelco 38503 Drive Belt Tensioner Assembly Image 2
ACDelco 38503 Drive Belt Tensioner Assembly Image 3
ACDelco 38503 Drive Belt Tensioner Assembly Image 4
ACDelco 38503 Drive Belt Tensioner Assembly Image 5
ACDelco 38503 Drive Belt Tensioner Assembly

ACDelco
Brand:ACDelco
Part Number: 38503
UPC: 00021625499734
Weight: 4.1 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

TENSIONERD (35)

ACDelco Gold (Professional) 90 Degree Molded Accessory Drive Belt Tensioner Assemblies are the high quality alternative to Original Equipment (OE) parts. These 90 degree molded belt tensioner assemblies are very important in optimal operation of the accessory belt drive system. The tensioner maintains the correct amount of tension on the belt throughout operation. 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. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Designed to keep drive belt at proper tension
  • 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:

Measurements:
75 mm x 30 mm x 40
Programming Required:
No
Pulley Center Bore Diameter (in):
1.181in
Pulley Center Bore Diameter (mm):
30.00mm
Pulley Color:
Black
Pulley Groove Quantity:
0
Pulley Material:
Steel
Pulley Mount Hole Quantity:
1
Pulley Outside Diameter (in):
3.0 in
Pulley Width (mm):
40.0mm
Pulley Width:
1.57
Universal Or Specific Fit:
Specific

Features and Benefits:

  • – Be sure to have replacement tensioner properly aligned to the other drive component pulleys
  • – Before purchasing and installing a 90 degree molded accessory drive belt tensioner assembly, make sure it is the correct fit for your vehicle
  • – Regularly check drive belt tension
  • – Regularly inspect the 90 degree molded accessory drive belt tensioner assemblies for signs of damage or wear, and replace them if signs of damage are found

Specifications:

Country of Origin:
US

Select a vehicle to narrow ACDelco 38503 Drive Belt Tensioner Assembly fitment info!

Last Updated: 03/10/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

2008

 

2007

 

2006

 

2005

 

2008

 

2007

 

2006

 

2005

 
American LaFrance ALF Eagle

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

American LaFrance ALF Eagle



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
Freightliner Argosy

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Argosy



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 
Freightliner Argosy

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Argosy



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2003

 

2002

 

2001

 

2000

 

2003

 

2002

 

2001

 

2000

 
Freightliner Argosy

11.1L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Argosy



11.1L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2014

 

2013

 

2014

 

2013

 
Freightliner Cascadia

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Cascadia



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2010

 

2009

 

2008

 

2011

 

2010

 

2009

 

2008

 
Freightliner Cascadia

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Cascadia



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2010

 

2009

 

2011

 

2010

 

2009

 
Freightliner Century Class

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Century Class



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2007

 

2006

 

2005

 

2004

 
Freightliner Century Class

12.7L L6 Diesel Turbo/Aftercooled,
14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Century Class



12.7L L6 Diesel Turbo/Aftercooled,
14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2009

 

2008

 

2007

 

2006

 

2005

 
Freightliner Classic

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Classic



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2007

 

2006

 

2005

 
Freightliner Classic

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Classic



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2008

 

2007

 

2006

 

2005

 

2008

 

2007

 

2006

 

2005

 
Freightliner Classic XL

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Classic XL



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2007

 

2006

 

2005

 
Freightliner Classic XL

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Classic XL



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 
Freightliner Columbia

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Columbia



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2008

 

2007

 

2006

 

2005

 

2004

 

2008

 

2007

 

2006

 

2005

 

2004

 
Freightliner Columbia

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Columbia



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2001

 

2001

 
Freightliner Condor

10.3L L6 Diesel Turbo,
12.0L 6 Diesel Turbo
1
 
Air Conditioning
 
Gold
Available Until Stock Depleted
 

Freightliner Condor



10.3L L6 Diesel Turbo,
12.0L 6 Diesel Turbo

Air Conditioning Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
Freightliner Coronado

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Coronado



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 
Freightliner Coronado

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner Coronado



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2008

 

2007

 

2006

 

2005

 

2008

 

2007

 

2006

 

2005

 
Freightliner FLD120

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD120



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2007

 

2006

 

2005

 
Freightliner FLD120

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD120



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2009

 

2008

 

2007

 

2006

 

2005

 
Freightliner FLD120SD

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD120SD



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2007

 

2006

 
Freightliner FLD120SD

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD120SD



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2009

 

2008

 

2007

 

2006

 

2005

 
Freightliner FLD132

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD132



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2007

 

2006

 

2005

 
Freightliner FLD132

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Freightliner FLD132



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 
Sterling Truck A9500

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck A9500



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2007

 

2006

 

2005

 

2004

 
Sterling Truck A9500

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck A9500



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2007

 

2006

 

2005

 

2004

 
Sterling Truck AT9500

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck AT9500



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
Sterling Truck Condor

10.3L L6 Diesel Turbo
1
 
Air Conditioning
 
Gold
Available Until Stock Depleted
 

Sterling Truck Condor



10.3L L6 Diesel Turbo

Air Conditioning Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2009

 
Sterling Truck L9500

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck L9500



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2007

 

2006

 

2005

 

2004

 
Sterling Truck L9500

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck L9500



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2008

 

2008

 
Sterling Truck LT9500

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck LT9500



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2007

 

2006

 

2005

 

2004

 
Sterling Truck LT9500

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck LT9500



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2006

 

2006

 
Sterling Truck LT9500

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Sterling Truck LT9500



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900EX

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900EX



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900EX

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900EX



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2011

 
Western Star 4900FA

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900FA



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900FA

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900FA



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2003

 

2007

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900FA

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900FA



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2018

 

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2018

 

2017

 

2016

 

2015

 

2014

 

2013

 

2012

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900SA

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900SA



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2004

 

2003

 

2007

 

2006

 

2005

 

2004

 

2003

 
Western Star 4900SA

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 4900SA



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2016

 

2016

 
Western Star 6900XD

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2014

 

2013

 

2014

 

2013

 
Western Star 6900XD

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2010

 

2009

 

2010

 

2009

 
Western Star 6900XD

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2007

 

2006

 

2005

 

2007

 

2006

 

2005

 
Western Star 6900XD

14.0L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



14.0L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2005

 

2005

 
Western Star 6900XD

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle

2003

 

2003

 
Western Star 6900XD

12.7L L6 Diesel Turbo/Aftercooled
1
 
Fan
 
Gold
Available Until Stock Depleted
 

Western Star 6900XD



12.7L L6 Diesel Turbo/Aftercooled

Fan Gold
Available Until Stock Depleted

1 Per Vehicle