HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates 36776 Accessory Drive Belt Idler Pulley - Center, Left, Smooth Pulley or Upper
Part #: 36776

Gates 36776 Accessory Drive Belt Idler Pulley - Center, Left, Smooth Pulley or Upper

DriveAlign Premium OE Pulley, Left
⚙️ 52 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦DriveAlign Premium OE Pulley, Left
🚗Fitment: Chevrolet and GMC, Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, Sierra 3500 HD, Silverado 1500, Sierra 1500, and Silverado 2500
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Overview of Gates DriveAlign Premium OE Pulley 36776

The Gates DriveAlign Premium OE Pulley 36776 is engineered for reliable performance in Chevrolet and GMC trucks. Designed as an accessory drive belt idler pulley, it ensures smooth belt operation and proper tension in your vehicle's accessory drive system.

  • Constructed from durable steel for long-lasting strength
  • Outside diameter of 90 mm and width of 32 mm for precise fitment
  • Features a smooth backside contact surface with no grooves
  • Includes pulley, bolt, dust shield, sleeve, and spacer for complete installation
  • OE exact comparison rating for direct replacement

Detailed Product Features and Specifications

This accessory drive belt idler pulley is made from steel, providing the necessary durability to withstand the demands of accessory drive systems in heavy-duty trucks. The pulley has an outside diameter of 90 mm and a width of 32 mm, with a bearing bore inside diameter of 17 mm, ensuring compatibility with the specified Chevrolet and GMC models. The smooth backside contact surface and absence of grooves indicate it is designed to guide or tension the belt without engaging with ribbed or multi-groove belts. The package includes all necessary components such as the pulley itself, bolt, dust shield, sleeve, and spacer, facilitating a straightforward installation process.

About the DriveAlign Premium OE Pulley Product Line

The DriveAlign Premium OE Pulley line by Gates focuses on delivering pulleys that meet original equipment specifications. This ensures that the pulley 36776 matches the exact dimensions and performance characteristics required by Chevrolet and GMC trucks, maintaining the integrity of the accessory drive belt system. The OE exact rating confirms that this pulley is designed to replace the factory-installed part without modification.

Compatible Vehicles and Common Applications

  • Chevrolet Sierra 1500, 2500 HD, and 3500 HD
  • GMC Sierra 1500, 2500 HD, and 3500 HD
  • Chevrolet Silverado 1500, 2500, 2500 HD, and 3500 HD

This pulley is used in the accessory drive belt system to maintain proper belt tension and alignment, which is critical for the operation of components such as the alternator, power steering pump, and air conditioning compressor.

Issues Addressed by the Gates DriveAlign Premium OE Pulley 36776

  • Eliminates belt slippage caused by worn or damaged idler pulleys
  • Prevents abnormal belt noise due to misalignment or pulley wear
  • Reduces premature belt wear by maintaining proper tension
  • Helps avoid accessory component failure linked to belt system issues
  • Restores factory-level performance in accessory drive systems

Installation Notes and Tips

Installation of the Gates DriveAlign Premium OE Pulley 36776 should be performed with the engine off and cooled down. Use the included bolt, dust shield, sleeve, and spacer to ensure proper assembly. Verify the bearing bore inside diameter of 17 mm matches the mounting shaft. Inspect the accessory drive belt for wear and replace if necessary during installation. Proper torque specifications should be followed to avoid damage or loosening during operation.

Quality Assurance and Warranty

Gates manufactures the DriveAlign Premium OE Pulley 36776 to meet stringent quality standards, ensuring durability and reliable performance. The OE exact rating confirms compatibility with original equipment specifications. Warranty details are provided by Gates and typically cover defects in materials and workmanship under normal use conditions.

BrandGates
Part Number36776
PositionDriveAlign Premium OE Pulley, Left
Bearing Bore Inside Diameter17
Bearing Bore Inside Diameter 1 (mm)17
Contact SurfaceSmooth/Backside
ContentsPulley, Bolt, Dust Shield, Sleeve, Spacer
Groove Quantity0
MaterialSteel
Number of Grooves0
Number of Pulleys1
OE Comparison RatingOE Exact
Outside Diameter90
Outside Diameter (mm)90
Pulley 1 FlangedNo
Pulley 1 FlangedNo
Pulley Quantity1
Width32

This part fits 52 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2025ChevroletSilverado 2500 HD6.6LV8DIESELLeftDriveAlign Premium OE Pulley
2025ChevroletSilverado 3500 HD6.6LV8DIESELLeftDriveAlign Premium OE Pulley
2025GMCSierra 2500 HD6.6LV8DIESELLeftDriveAlign Premium OE Pulley
2025GMCSierra 3500 HD6.6LV8DIESELLeftDriveAlign Premium OE Pulley
2024ChevroletSilverado 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2024ChevroletSilverado 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2024GMCSierra 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2024GMCSierra 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2023ChevroletSilverado 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2023ChevroletSilverado 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2023GMCSierra 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2023GMCSierra 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2022ChevroletSilverado 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2022ChevroletSilverado 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2022GMCSierra 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2022GMCSierra 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2021ChevroletSilverado 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2021ChevroletSilverado 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2021GMCSierra 2500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2021GMCSierra 3500 HD6.6LV8DIESELLeftW/Dual Alts.; DriveAlign Premium OE Pulley
2020ChevroletSilverado 2500 HD6.6LV8DIESELLeftDriver Side; W/Dual Alts.; DriveAlign Premium OE Pulley
2020ChevroletSilverado 3500 HD6.6LV8DIESELLeftDriver Side; W/Dual Alts.; DriveAlign Premium OE Pulley
2020GMCSierra 2500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2020GMCSierra 3500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2019ChevroletSilverado 2500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2019ChevroletSilverado 3500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2019GMCSierra 2500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2019GMCSierra 3500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2018ChevroletSilverado 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2018ChevroletSilverado 15004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2018ChevroletSilverado 2500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2018ChevroletSilverado 3500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2018GMCSierra 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2018GMCSierra 2500 HD6.6LV8DIESELUpperDriveAlign Premium OE Pulley
2018GMCSierra 3500 HD6.6LV8DIESELUpperDriveAlign Premium OE Pulley
2017ChevroletSilverado 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2017ChevroletSilverado 15004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2017ChevroletSilverado 25004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2017ChevroletSilverado 2500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2017ChevroletSilverado 3500 HD6.6LV8DIESELUpperW/Dual Alts.; DriveAlign Premium OE Pulley
2017GMCSierra 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2017GMCSierra 2500 HD6.6LV8DIESELUpperDriveAlign Premium OE Pulley
2017GMCSierra 3500 HD6.6LV8DIESELUpperDriveAlign Premium OE Pulley
2016ChevroletSilverado 15004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2016ChevroletSilverado 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2016GMCSierra 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2015ChevroletSilverado 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2015ChevroletSilverado 15004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2015GMCSierra 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2014ChevroletSilverado 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley
2014ChevroletSilverado 15004.3LV6GASSmooth PulleyDriveAlign Premium OE Pulley
2014GMCSierra 15004.3LV6FLEXSmooth PulleyDriveAlign Premium OE Pulley

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

126260753677650070900613900613A

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.