ARP Custom Age Head Stud Kit - Fits Subaru WRX 2002-2014 / STI 2004-2021 DOHC subaru-wrx-2006 Plug and Play 18-Gauge Wiring

ARP Custom Age Head Stud Kit - Fits Subaru WRX 2002-2014 / STI 2004-2021 DOHC subaru-wrx-2006 Plug and Play 18-Gauge WiringIf you are planning on making 500 675whp, these are the head studs for you! ARP head studs for your Subaru WRX and STI ARP uses a premium grade 8740 chrome moly that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat treated to 270,000 psi. These studs use a 12 point style nut and are OE 11mm sized. The head of the stud uses a 4mm Allen to thread the studs into the block. ARP studs are

SKU: 73387402018 · From vanierexcavation.com