Harmonic Damper Bolt Kit for SB Chevrolet

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As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damperis locked in position, ARP has developed these ultra strong 190,000 psi bolts that let you exert maximum clamping force. Specialfeatures include 1/4? thick, wide area washer and an extra tall 12-point head that accepts a deep socket and eliminates the worry ofstripping the head. Material: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA Show more