ARP 2342501 Harmonic Balancer Bolt Kit For Select Chevrolet Small Block Applications

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Ensures that the balancer is locked in position as the crankshaft flexes and twists
Rated at 200,000 PSI, which is considerably stronger than Grade 8 hardware
Compact and extra tall 12-point head eliminates the worry of stripping the head by accepting a deep socket
Features an under head length of 2.470, diameter/thread size of 7/16 -20, and a socket size of 13/16"
Includes a wide area washer that is 1/4" thick