Gates 37029P Alternator Decoupler Pulley

Gates 37029P Alternator Decoupler Pulley

The Gates 37029P is a steel alternator decoupler pulley built for accessory belt systems that need smoother alternator control during engine deceleration. It uses a one-way clutch design with a V-ribbed grooved contact surface to help isolate vibration, reduce belt shock, and support longer belt and component life.

Compatible with select Nissan Altima and Nissan Rogue applications, this Gates DriveAlign decoupler pulley is an OE Exact replacement for the listed vehicles. The Gates decoupler pulley line is engineered for alternator free-wheeling during overrun, which helps the charging system operate more smoothly under changing engine speeds.

Key Features

• Steel construction for durability in the accessory drive system
• One-way clutch decoupler pulley design
• 6-groove V-ribbed grooved contact surface
• Flanged design for secure fitment
• Includes pulley and dust cap
• OE Exact comparison rating

Product Details

Gates DriveAlign alternator decoupler pulleys are made to let the alternator overrun when engine speed drops, reducing belt flutter and vibration transfer through the front-end accessory drive. The 37029P measures 52.5 mm outside diameter, 36.5 mm width, and 14.5 mm bore diameter, with a steel body and flanged profile for precise installation. This part cross-references Litens 930011A for the same application.

Fits 2007-2013 Nissan Altima, N/A. Fits 2010-2013 Nissan Rogue, N/A.

Common Issues Addressed

• Belt vibration during engine deceleration
• Accessory drive noise from a worn alternator pulley
• Harsh belt engagement and disengagement
• Premature wear on the belt and related components
• Irregular alternator overrun behavior

Installation Notes

Installation tool required on Nissan Rogue applications with Valeo alternator. Verify the alternator pulley style, groove count, and bore dimensions before installation. Confirm the vehicle uses the listed decoupler pulley design, since one-way clutch pulleys and overrunning alternator decoupler pulleys are not interchangeable.

Quality Assurance

Gates DriveAlign pulleys are engineered for OE-style fit and function in charging system applications. The 37029P is listed as an OE Exact replacement and is built to match the specified application requirements for Nissan Altima and Nissan Rogue models.