URO Alternator Decoupler Pulley

The URO Alternator Decoupler Pulley (also called an alternator overrunning pulley, OAP, or overrunning alternator decoupler) is a replacement part for the alternator drive. It helps the alternator and serpentine belt drive work smoothly together. Choose the correct part number for your application from the variants listed.

Key Features:

• Decoupler design with a one-way clutch that lets the alternator shaft freewheel relative to the pulley when engine speed drops or changes abruptly
• Helps reduce belt vibration, belt slap, and drivetrain noise
• Helps reduce stress on the serpentine belt, tensioner, and alternator bearings, which supports longer component life
• Replaces a worn or failed pulley that causes rattling, chirping, or squealing at idle or startup
• Designed as an aftermarket replacement for the original equipment pulley

URO supplies aftermarket replacement parts for European vehicles. Replacing a failed decoupler pulley restores quiet, reliable alternator operation and protects the rest of the belt drive. It is often replaced together with the serpentine belt and tensioner for best results.