ARP Main Stud Kit, BMW S54

Building for reliability and serious performance requires the best components available, and OEM hardware creates a weakness in your engine. When supercharging or turbocharging your engine, upgrading your head studs is a must.

ARP is the world leader in fastener technology, designing and manufacturing some of the best products on the market, including their parallel-ground washers and aerospace-quality nuts. It is the only brand we trust, and their fasteners can be found on all VAC-built engines. 

ARP Main Studs help to eliminate main cap walk and protect the threads of your engine block. Heat-treated in-house, ARP studs are made of 8740 chromoly steel and rolled for strengthened threads.