ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads.

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ARP Connecting Rod Bolts, High Performance Series, Through-Bolt, 180, 000psi, 8740 Chromoly Steel, For Ford, Pair

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ARP Washer, Hardened, High Performance, Flat, 1/2 in. ID, 2.000 in. OD, Chromoly, Black Oxide, 0.275 in. Thick, Each

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