ARP Head Stud Kit - BMW E90/E92 M3 S65 4.0L V8 - 201-4307 Mens 14 Designed and engineered to maximize

Designed and engineered to maximize cooling efficiency

black or red hot-side charge pipe

The steel ring at the end of the tether is designed to slide over your shoulder harness end link so they release with your belts

For DOHC w/ 32mm hoses only

as well as the latest level of international standard API

ARP Head Stud Kit - BMW E90/E92 M3 S65 4.0L V8 - 201-4307 Mens 14 Designed and engineered to maximizeIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to aircraft quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat treated