URO Alternator Overrunning Decoupler Pulley

The URO Alternator Overrunning Decoupler Pulley (also called an alternator decoupler pulley, OAP or overrunning alternator pulley) replaces the factory alternator pulley. It helps the alternator and serpentine belt drive run smoothly. The pulley uses a one-way clutch and an internal damping mechanism. These absorb the speed fluctuations and torsional vibrations that engine rpm changes cause.

Key Features:

• Overrunning clutch design lets the alternator freewheel when the engine decelerates, which reduces shock loads on the belt
• Damps crankshaft vibration to help reduce belt noise, slippage and wear
• Helps protect the belt, tensioner and alternator bearings from premature wear
• Replaces a worn pulley that can cause chirping, rattling or belt flutter
• Made to match the form and function of the original equipment pulley for a straightforward replacement

URO supplies quality aftermarket replacement parts for European vehicles. Choose the individual variant that matches your application from the options listed on this page. Replacing the decoupler pulley when you replace the alternator or serpentine belt is a good way to restore quiet, reliable drive system performance.