ARP Coyote Harmonic Damper Bolt Kit

There are several compelling reasons why ARP’s specially designed harmonic damper bolt should be used instead of the factory hardware. First, they’re made of heat-treated 8740 chrome moly steel that’s nominally rated at 190,000 psi tensile strength to provide high RPM security. Secondly, the increased-wrenching size, tall 12-point head facilitates turning high compression engines over by hand without fear of rounding the bolt heads. Kits include a ¼” thick wide area washer to better distribute the clamping force.
156-2502 – Harmonic Damper Bolt Kit For 5.0L Ford Coyote

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