ARP 260-4704 - Subaru EJ20 / EJ25 Custom Age 625 Head Stud Kit

This Head Stud Kit from ARP for the Subaru EJ20 / EJ25 Engines are an excellent upgrade for any engine build. The Studs offered in this kit are made from ARP's Custom Age 625 Alloy and are designed to withstand the extreme cylinder pressures seen when running more than 30lbs of boost. We recommend this Head Stud Kit for all EJ20 / EJ25 Engines running more than 600HP or more than 30lbs of boost.