ARP Square Drive Harmonic Balancer, Damper Bolt Kit - SB Chevy R01P003L At the heart of this

At the heart of this invention

BMW 128i 2008-13 / 3-Series 2006-13

Bolt-in installation

Valves work with Allstar Performance center reliefs and other popular plastic or aluminum quick disconnect fittings

ARP Square Drive Harmonic Balancer, Damper Bolt Kit - SB Chevy R01P003L At the heart of thisARP offers a special version of its rugged 200, 000 psi rated balancer bolt that can accept a standard 1 2? drive ratchet or breaker bar to facilitate rotating the crank assembly. 1 2? square drive forged into bolt head, enabling the rotation of an engine with any 1 2? drive tool Made from heat treated 8740 chrome moly steel with heavy duty black oxide finish. Since 1968, ARP is the fastener of champions and the world leader in fastener technology.