ARP Head Stud Kit - BMW E90/E92 M3 S65 4.0L V8 - 201-4307 Mens 14 black or red hot-side charge

black or red hot-side charge pipe

making this the perfect bolt-on upgrade for improving the efficiency of your charge air system

19-21 WRX Owners can now be among the tens of thousands using a GrimmSpeed-brand Crank Pulley

Designed and engineered to maximize cooling efficiency

ARP Head Stud Kit - BMW E90/E92 M3 S65 4.0L V8 - 201-4307 Mens 14 black or red hot-side chargeIt 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