Blue Print Alternator Overrun Pulley (ADT36121)

The Blue Print Alternator Overrun Pulley (ADT36121) is supplied in OE matching quality and maintains the high standards of Blue Print products.

An alternator overrun pulley, also known as an overrunning alternator pulley (OAP) or freewheel pulley, is a component used in the drive system of some vehicles, particularly those with a serpentine belt system. Its primary function is to allow the alternator to freewheel or spin independently of the engine when the engine decelerates or is idling.

All Blue Print components are developed and manufactured to meet OE specifications to be direct replacements and undergo rigorous testing and quality checks to guarantee every part is manufactured to a high standard. And you can enjoy added peace of mind with a 3-year manufacturer's guarantee for every product.