ARP Head Stud Kit - BMW B58 3.0L ARP2000 - 201-4701 5.5 Gallon 5" thick bar-and-plate core with

5" thick bar-and-plate core with strategic core composition provides optimal cooling and minimal pressure loss

Clutch Disc: 3001603

fuel level

Looking for an effective solution to eliminate inconsistent power delivery from your 2004-2007 STI or WRX

ARP Head Stud Kit - BMW B58 3.0L ARP2000 - 201-4701 5.5 Gallon 5" thick bar-and-plate core withIt 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