ARP 120-2502 Square Drive Balancer Bolt Kit for BUICK ymm_31 It can also be upgraded

It can also be upgraded into a full Akrapovic exhaust system by combining it with Evolution Race Header Set (without valves) or Evolution Header Set (with side mufflers and valves)

Power gains of 6

Captures up to 99% of harmful particulates

Temp (including RTD)

high-grade materials

ARP 120-2502 Square Drive Balancer Bolt Kit for BUICK ymm_31 It can also be upgradedSquare Drive Balancer Bolt Kit (120 2502) by ARP. As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 200,000 psi bolts that let you exert maximum clamping force. Special features include 1 4" thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the