Genuine GM Factory Replacement Harmonic Balancer /Dampener Bolt for GM LS7, LS3, & Gen V LT Engines using a dry sump oiling system. Also known as a Crank Pulley Bolt or Engine Crankshaft Pulley Bolt.
GM Performance Parts harmonic balancer bolts are made of high-quality steel and are heat-treated for extra strength. The factory LS/LT series engines harmonic balancer bolts are a torque to yield design. Not reusable.