Gates 36959 Accessory Drive Belt Idler Pulley - Left or Lower

Overview

The Gates DriveAlign Premium OE Pulley 36959 is an accessory drive belt idler pulley built for OE-quality fit and smooth belt routing. It is listed for Jeep Wrangler and Jeep Gladiator applications with smooth pulley notes, and it serves as a direct replacement style component in the accessory drive belt system.

Use this pulley when servicing a Jeep Wrangler or Jeep Gladiator accessory drive setup that calls for a smooth backside pulley. The Gates 36959 is engineered as a thermoplastic pulley with OE performance grading and a center-bore size that matches the specified application.

Key Features

• DriveAlign Premium OE Pulley line for OE-style accessory drive service.
• Thermoplastic pulley construction for the specified belt system application.
• Smooth/backside pulley design with no grooves.
• OE performance grade for fit and function in the accessory drive belt system.
• Includes pulley, bolt, and dust shield as listed in the product data.

Detailed Description

This Gates accessory drive belt idler pulley is designed for smooth belt contact in applications that use an idler or tensioning pulley arrangement. The DriveAlign Premium OE Pulley line focuses on OE-quality fit and consistent belt tracking, making it a practical replacement for service work on Jeep Wrangler and Jeep Gladiator accessory drive systems. Part number 36959 is also referenced by Four Seasons 36959 and cross-references 5281821AA for the same application.

Fitment data shows this pulley for 2020-2025 Jeep Wrangler, lower; 2020-2024 Jeep Gladiator, lower; and 2018 Jeep Wrangler, left, with smooth pulley notes. If you are replacing a worn accessory drive belt idler pulley on a Jeep Wrangler or Jeep Gladiator, confirm the listed position and pulley style before installation. The Gates 36959 is built around the specified bore, width, and outside diameter dimensions for the application.

What It Is Used For

• Eliminating belt noise caused by a worn smooth idler pulley.
• Restoring proper belt routing in the accessory drive system.
• Replacing a pulley with bearing wear or rough rotation.
• Addressing belt tracking issues tied to pulley surface wear.
• Servicing a tensioner or idler pulley location specified for the vehicle.

Installation Notes

Match the pulley style, position, and notes in the fitment data before installation. Verify the bearing bore, outside diameter, and width against the removed part to confirm application accuracy. The product data lists a pulley, bolt, and dust shield; follow the vehicle service procedure for torque and alignment requirements.

Quality Assurance

Gates positions the DriveAlign line as an OE-quality pulley solution for passenger cars and light trucks. Part number 36959 is built to OE performance standards for the specified accessory drive belt application.