Allstar Performance Crankshaft Key Chevy LS1/LS2/LS6 Gen III 5.7l ALL87034

A crankshaft key is a critical fastening component that locks your harmonic balancer and pulley system to the crankshaft, preventing any rotational slip that could throw off ignition timing and cause catastrophic engine damage. If you're running an LS-series engine at high RPM or under boost, a quality crankshaft key is non-negotiable—this Allstar Performance unit delivers the reliability your build demands. Whether you're rebuilding from the ground up or replacing a worn key, this is the kind of part that prevents expensive problems down the road.

• Woodruff-style design
• 5/16 x 1-31/64 in
• Steel construction
• Natural finish
• GM LS-Series compatible
• LS1, LS2, LS6 Gen III
• 5.7L engines
• Sold individually
• Bolt-on installation