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ARP main stud kits eliminate main cap walk and fretting while safeguarding engine block threads. Made from 8740 chromoly steel, the studs are heat-treated in-house to achieve a tensile strength of 190,000 psi. The J-form threads are rolled after heat treatment, resulting in stronger threads compared to competitors. Each kit includes hardened parallel-ground washers and high-quality nuts, ensuring a secure and durable fit.
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