Features: 1. FITMENT: Perfectly work on 1989-2002 Dodge 5.9BT Cummins 12 Valve & 24 Valve Engine. 2. SUPERIOR MATERIOR: Made of 6061-T6 billet aluminum CNC anodized black surface, and the socket head cap screw is made of stainless steel. Resisting rust and corrosion, ensures an unparalleled long lifespan. 3. EXCELLENT FUNCTION: The dowel pin used in the Cummins engine can back out of its bore. When it does, it can fall into the camshaft gear and cause all types of expensive engine damage. Because of the thickness of this retainer it will contact the timing cover before it can back out. .