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ARP Head Bolts & Head Studs

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ARP head stud kits are made from 8740 chromemoly steel. The studs have a whopping 190,000 psi tensile strength and are precision centerless-ground and thread-rolled to Mil-S-8879 specs. Their black oxide finish protects them from wear and corrosion and ARP throws in hardened parallel washers for uniform load distribution and accurate torque readings. HEAD STUDS All Pro Series Head Bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 190,000 psi. ARP
ARP Head Bolts & Head Studs
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