ARP Mazda Miata Main Studs

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ARP Mazda Miata Main Studs 1990 to 1997 Mazda Miata (NA) 1999 to 2005 Mazda Miata (NB) ARP main stud kits help eliminate main cap walk/fretting and protect the threads in your engi ne block. They include studs made from 8740 chromoly steel and heat-treated in-house to 190,000 psi tensile-strength rating. The precision J-form threads are rolled after heat-treat for much stronger threads than the competition. Kits come complete with hardened parallel-ground washers and high-quality nuts. Add confidence in the strength of your engine build with the ARP main stud kit designed for your application. Show more