Gates 38420 | Accessory Drive Belt Tensioner Assembly

Part Number
DriveAlign Automatic Belt Drive Tensioner

Fits: 06-07 Buick Terraza, 06-11 Chevrolet Impala, 06-10 Chevrolet Malibu, 06-07 Chevrolet Monte Carlo, 06-09 Chevrolet Uplander, 06-10 Pontiac G6, 06-09 Pontiac Montana, 06-07 Saturn Relay, 07-08 Saturn Aura, 08-10 Saturn Vue

Special Price $58.64 Regular Price $68.99
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Estimated Ship Date: 1 Business Day or Less

Gates is a global leader in Original Equipment (OE) System Design. With a full line of tensioners globally, you can count on Gates to supply premium quality DriveAlign Automatic Belt Tensioners you can depend on.

Gates ensures that every tensioner they manufacture is built to rigid tolerances and specifications that guarantee OE fit, form and function.

  • Full line coverage for Import, Domestic and Heavy-Duty applications.
  • Looks, fits and functions just like the OE.
  • Manufactured using same technology as Original Equipment Manufacturer (OEM) part assures factory match.
  • Patented vibration damping system improves tensioners, belts and accessory life.
  • Torsional round spring design provides consistent tension and does not allow contamination.
  • Comprehensive line includes parts to fit cars, vans, SUV’s and light/heavy-duty trucks.

Gates - Driven By Possibility

BRAND: Gates


  • 2011-06 Chevrolet, Impala, V-6 3.5 L, Tensioner Assy.
  • Belt Drive Tensioner
  • DriveAlign® Automatic Belt Drive Tensioner
  • DriveAlign Automatic Belt Drive Tensioner


Bearing Bore Inside Diameter 1 (in).67
Bearing Bore Inside Diameter 1 (mm)17
Belt TypeV-Ribbed
Contact SurfaceV-Ribbed Grooved
ContentsTensioner Assy.
Mounting Hole Quantity1
Number of Grooves6
OE Comparison RatingOE Exact
Outside Diameter (in)2.91
Outside Diameter (mm)74
Pulley 1 FlangedYes
Pulley Quantity1
Width (in)1.02
Width (mm)26



  • Dorman: 419-009
  • ACDelco: 38420
  • Carquest: 38420
  • Dayco: 305383
  • General Motors: 12577764
  • Goodyear: 49391
  • Tendeco: 999775
  • General Motors: 12603527
  • Litens: 999775A
  • Dayco: 89383
  • NAPA Belts/Hose: 38420


  • 2006-2009 Pontiac Montana
  • 2006-2007 Buick Terraza
  • 2006-2010 Chevrolet Malibu
  • 2007-2008 Saturn Aura
  • 2006-2011 Chevrolet Impala
  • 2006-2007 Saturn Relay
  • 2008-2010 Saturn Vue
  • 2006-2010 Pontiac G6
  • 2006-2007 Chevrolet Monte Carlo
  • 2006-2009 Chevrolet Uplander
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
What types of automotive products does Gates offer?
Gates offers a wide range of automotive products, including belts, hoses, tensioners, and more.
I'm looking for a replacement belt for my vehicle. Can you help me understand the different options available from Gates and recommend the best one for my specific make and model?
Yes, Gates offers a range of replacement belts for various applications. To find the best one for your specific make and model, it is recommended to consult the Gates website or reach out to their customer support.
Are there any specific maintenance for Gates products?
Yes, there are specific maintenance and installation guidelines to follow when using Gates products to ensure optimal performance and longevity.
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