Overrunning Alternator Decoupler

The Overrunning Alternator Decoupler Pulley features the latest in alternator pulley technology, and currently more than 70 million vehicles in North America are now equipped with an OAD vs. an OAP. OADs reduce noise, vibration and harshness typical for today’s lean engine designs, while improving fuel efficiency and lowering the risk of premature accessory drive component failures. The OAD not only features a one-way internal clutch, but it also has a steel torsion spring that absorbs increased vibrations, resulting in a smooth and quiet drive. It’s critical to replace an OAD-equipped alternator pulley with another OAD unit. Without it, the vehicle could experience excessive belt flutter, worn or broken tensioners, extreme belt wear, belt ejection and unwanted noise from belt vibration and slippage. The OADs provide an exact OEM match for premium performance.