Oldsmobile V8, 13/16" Socket size, 3/4"-16" Diameter/Thread size, 1.300" Under Head Length, ARP 180-2501 Harmonic Balancer Bolt Kit ARP Buick Pontiac & Oldsmobile, Harmonic Balancer Bolts As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position ARP has developed these ultra strong 200,00 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 elimates the worry of stripping the head.
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