ARP High Performance Series main bolts are rated at 180,000 psi and a popular premium replacement for OEM fasteners. Designed to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and feature a reduced wrenching head, large underhead radius, and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit.

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ARP Bolts, Hex Head, Stainless 300, Polished, 3/8 in.-24 RH Thread, 4.500 in. UHL, Set of 5

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ARP Bolts, 5/16-24 X 2.375 12Pt Black Oxide

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ARP Bolts, Hex Head, Chromoly Steel, Black Oxide, 7/16 in.-14 RH Thread, 2.000 in. UHL, Set of 5

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ARP Valve Cover Bolts, Chromoly, Black Oxide, Hex, 1/4 in.-20 Diameter, SBC Brodix Valve Covers, Set of 4

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ARP Timing Cover and Cast Iron Water Pump Bolts, Chromoly, Black Oxide, Hex, For Ford, 289, 302, Kit

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ARP Cylinder Head Stud, Pro-Series, Hex Head, For Chevrolet BB, Bowtie, Kit

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