ARP Phase 2 SOHC Head Stud Kit 99+ Subaru EJ Series S2000_2000-2009 Piping 3 inches

Piping 3 inches

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Inner Diameter - 2

ARP Phase 2 SOHC Head Stud Kit 99+ Subaru EJ Series S2000_2000-2009 Piping 3 inchesPart #: 260 4702 ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is placed vertically in special racks and precisely heat treated to 190,000 psi, ensuring complete heat penetration. Following heat treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. ARP studs are