Gates 37204P Alternator Decoupler Pulley

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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Gates Alternator Decoupler Pulleys provide vibration isolation within the Accessory Belt Drive System resulting in smoother engine performance and efficiency and increased belt and component life. Line consists of overrunning alternator decoupler pulleys and one way clutches.

  • Exact OE replacement
  • Patented design unmatched by any other supplier
  • Torsion spring absorbs engine vibration for quieter, smoother ride
  • Chosen by OEM to reduce noise, vibration and harshness

Note: Vehicles designed to use ADPs should never use a solid or one-way clutch pulley. These parts are not interchangeable, and failure to install the correct replacement can cause damage to accessory drive components.

Gates - Driven By Possibility

BRAND: Gates


  • 2018-14 Chevrolet, Silverado Series Pickup, V-8 5.3 L, Alt. Decoupler Pulley
  • Decoupler Pulley
  • DriveAlign® Overrunning Decoupler Pulley
  • DriveAlign Overrunning Decoupler Pulley


Bore Diameter14
Contact SurfaceV-Ribbed Grooved
ContentsPulley, Dust Cap
DescriptionAlternator Decoupler Pulley
Groove Quantity6
OE Comparison RatingOE Exact
Outside Diameter59
Required Tool Part Number91024-3

W/150A. Alt.; Installation Tool Required



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


  • 2018-2018 Chevrolet Cheyenne
  • 2014-2018 GMC Sierra 1500
  • 2014-2018 GMC Sierra
  • 2014-2018 Chevrolet Silverado 1500
  • 2014-2018 Chevrolet Silverado 2500
More Information
Make ModelChevrolet Cheyenne, Chevrolet Silverado 1500, Chevrolet Silverado 2500, GMC Sierra, GMC Sierra 1500
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