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  2. Auto Parts
  3. Belts and Cooling
  4. Accessory Drive Belt System Components
  5. Drive Belt Tensioner Assembly
  6. Gates 38521

Gates 38521 Drive Belt Tensioner Assembly

Gates 38521 Drive Belt Tensioner Assembly Image 1
Gates 38521 Drive Belt Tensioner Assembly Image 2
Gates 38521 Drive Belt Tensioner Assembly Image 3
Gates 38521 Drive Belt Tensioner Assembly

Gates
Brand:Gates
Part Number: 38521
UPC: 072053880199
Weight: 4.3 lbs
Condition:New



On Sale:

$209.31

Availability:
8 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

Get the Gates 38521 Drive Belt Tensioner Assembly for your vehicle. Buy now and secure your purchase online!

FleetRunner Heavy-Duty Automatic Belt Tensioners are the longest-lasting belt tensioners in the industry, engineered to exceed demanding OEM requirements. In laboratory tests under extreme peak-to-peak vibration and contamination tests, FleetRunner heavy-duty tensioners lasted up to 3X longer than competitive aftermarket tensioners.

Features and Benefits:

  • Chrome-silicone round torsion spring for less ex-fatigue than at-spring designs
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Optimized components engineered for maximum strength and durability
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life

Specifications:

Bearing Bore Inside Diameter:
1.18 in.
Bearing Bore Inside Diameter:
30 mm
Belt Type:
V-Ribbed
Contact Surface:
Smooth/Backside
Contents:
Tensioner Assy.
Material:
Steel
Mounting Hole Quantity:
1
Outside Diameter 1 (in):
2.95
Outside Diameter 1 (mm):
75
Pulley 1 Flanged:
No
Pulley 1 Groove Quantity:
0
Pulley Quantity:
1
Width 1 (in):
1.69
Width 1 (mm):
43
ACDelco #:
38521
Alliance Truck Parts #:
GT38521
CARQUEST #:
38521
CARQUEST #:
89418
Cummins #:
3400885
Cummins #:
3570333
Dayco #:
89418
Dynacraft #:
3400885
Goodyear #:
49527
Litens #:
910012A
NAPA Belts/Hose #:
38521
SKF #:
VKM910012
Tendeco #:
910012
Country of Origin:
CA

Select a vehicle to narrow Gates 38521 Drive Belt Tensioner Assembly fitment info!

Last Updated: 08/13/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

2001

 

2001

 
Freightliner Argosy

10.8L L6 Diesel Turbo
1
 		 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Argosy



10.8L L6 Diesel Turbo DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Freightliner Argosy

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Argosy



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2000

 

1999

 

1998

 

2001

 

2000

 

1999

 

1998

 
Freightliner Century Class

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Century Class



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2002

 

2001

 

2002

 

2001

 
Freightliner Classic

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Classic



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
Freightliner Classic XL

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Classic XL



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Freightliner Classic XL

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Classic XL



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Freightliner Columbia

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Columbia



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2003

 
Freightliner Condor

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Condor



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Freightliner Condor

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner Condor



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2002

 

2001

 

2000

 

2003

 

2002

 

2001

 

2000

 
Freightliner FL112

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FL112



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
Freightliner FLD112

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD112



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Freightliner FLD112

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD112



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Freightliner FLD112

10.8L L6 Diesel Turbo
1
 
Fan, Water Pump and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD112



10.8L L6 Diesel Turbo

Fan, Water Pump and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2002

 

2003

 

2002

 
Freightliner FLD120

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD120



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Freightliner FLD120

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD120



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Freightliner FLD120

10.8L L6 Diesel Turbo
1
 
Fan, Water Pump and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD120



10.8L L6 Diesel Turbo

Fan, Water Pump and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2003

 
Freightliner FLD120SD

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD120SD



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2003

 

2003

 
Freightliner FLD132

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD132



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Freightliner FLD132

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Freightliner FLD132



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2004

 

2003

 

2002

 
International 5500i

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 5500i



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2004

 

2003

 

2002

 
International 5600i

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 5600i



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
International 5900i SBA

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 5900i SBA



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2004

 

2003

 
International 7600

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 7600



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2004

 

2003

 
International 8600 SBA

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 8600 SBA



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2004

 

2003

 
International 9200i SBA

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 9200i SBA



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2005

 

2004

 

2005

 

2004

 
International 9400i SBA

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

International 9400i SBA



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2004

 
Kenworth T600A

10.8L L6 Diesel Turbo
1
 
Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Kenworth T600A



10.8L L6 Diesel Turbo

Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2002

 

2001

 

2000

 

2002

 

2001

 

2000

 
Kenworth T600A

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Kenworth T600A



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Kenworth T800

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Kenworth T800



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
Kenworth W900

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Kenworth W900



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

1999

 

2000

 

1999

 
Kenworth W900

10.8L L6 Diesel Turbo
1
 		 
DriveAlign Premium OE Automatic Belt Tensioner
 

Kenworth W900



10.8L L6 Diesel Turbo DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2011

 

2010

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 
Oshkosh Motor Truck Co. S

10.8L L6 Diesel Turbo
1
 		 
DriveAlign Premium OE Automatic Belt Tensioner
 

Oshkosh Motor Truck Co. S



10.8L L6 Diesel Turbo DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2004

 
Oshkosh Motor Truck Co. S

10.8L L6 Diesel Turbo
1
 
Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Oshkosh Motor Truck Co. S



10.8L L6 Diesel Turbo

Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2009

 

2008

 

2007

 

2006

 
Peterbilt 320

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 320



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2005

 

2005

 
Peterbilt 320

10.8L L6 Diesel Turbo
1
 		 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 320



10.8L L6 Diesel Turbo DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2004

 

2003

 

2002

 

2001

 
Peterbilt 357

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 357



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2001

 
Peterbilt 378

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 378



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2007

 

2007

 
Peterbilt 385

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 385



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2006

 

2006

 
Peterbilt 385

10.8L L6 Diesel Turbo
1
 
Fan
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 385



10.8L L6 Diesel Turbo

Fan DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2004

 

2003

 

2002

 

2004

 

2003

 

2002

 
Peterbilt 385

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 385



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Peterbilt 385

10.8L L6 Diesel Turbo
1
 
Fan
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 385



10.8L L6 Diesel Turbo

Fan DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Peterbilt 387

10.8L L6 Diesel Turbo
1
 
Fan, Alternator and Hub
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Peterbilt 387



10.8L L6 Diesel Turbo

Fan, Alternator and Hub DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2000

 

2000

 
Western Star 4800

10.8L L6 Diesel Turbo
1
 		 
DriveAlign Premium OE Automatic Belt Tensioner
 

Western Star 4800



10.8L L6 Diesel Turbo DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle

2001

 

2000

 

2001

 

2000

 
Western Star 4900

10.8L L6 Diesel Turbo
1
 
Fan and Alternator
 
DriveAlign Premium OE Automatic Belt Tensioner
 

Western Star 4900



10.8L L6 Diesel Turbo

Fan and Alternator DriveAlign Premium OE Automatic Belt Tensioner

1 Per Vehicle