Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
This ARP main stud kit is engineered for Pontiac 400–455 engines with 4-bolt mains and supplies high-quality main studs to secure main caps in high-load applications. Intended as a direct replacement upgrade over conventional fasteners, the kit provides the stud hardware needed to clamp mains reliably during rebuilds and performance builds where secure main cap retention is required for engine durability.
ARP Pontiac 400-455 4-Bolt Main Stud Kit
