Gates 37204P | Alternator Decoupler Pulley

Part Number
DriveAlign Overrunning Decoupler Pulley

Fits: 14-18 Chevrolet Silverado 1500, 14-18 Chevrolet Silverado 2500, 14-18 GMC Sierra, 14-18 GMC Sierra 1500, 18 Chevrolet Cheyenne
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DriveAlign Overrunning Alternator Decoupler Pulley (ADP)

Gates DriveAlign Alternator Decoupler Pulleys allow the alternator to "free-wheel" or "overrun" every time the engine decelerates and provide vibration isolation within the accessory belt drive system. This results in smoother engine performance, efficiency and increased belt and component life. The line consists of overrunning alternator decoupler pulleys and one-way clutches (not interchangeable).


  • Exact OE replacement
  • Chosen by OEM to reduce noise, vibration and harshness and improve fuel economy
  • Patented design unmatched by any other supplier


Bore Diameter:14
Contact Surface:V-Ribbed Grooved
Contents:Pulley, Dust Cap
Description:Alternator Decoupler Pulley
Groove Quantity:6
Installation Tools Requirements:91024-3
OE Comparison Rating:OE Exact
Outside Diameter:59


  • ACDelco: 37204P
  • General Motors: 12626060
  • Goodyear: 49953
  • Litens: 920030A
  • NAPA Belts/Hose: 37204P
  • Tendeco: 920030


  • 2014-2018 GMC Sierra 1500        Note: W/150A. Alt.; Installation Tool Required
  • 2018 Chevrolet Cheyenne        Note: W/150A. Alt.; Installation Tool Required
  • 2014-2018 Chevrolet Silverado 1500        Note: W/150A. Alt.; Installation Tool Required
  • 2014-2018 Chevrolet Silverado 2500        Note: W/150A. Alt.; Installation Tool Required
  • 2014-2018 GMC Sierra        Note: W/150A. Alt.; Installation Tool Required

Customer Questions
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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