ARP Head Stud Kit, 12-Point Nut high response turbo au 2001-2007 Subaru STI GDB

2001-2007 Subaru STI GDB

and Supersonic Universal Fit BOV

Built for durability

Spool RB30DET (DOHC) Drag Pro I Beam Forged ConRods and Custom Ross Racing Pistons

ARP Head Stud Kit, 12-Point Nut high response turbo au 2001-2007 Subaru STI GDBSuit BMW 2. 5L (M50), 3. 0L (S50US) & 3. 2L (S52US) inline 6 (ARP2000) Part Number : AR201 4302 It 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, there's 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