ARP Head Studs Mitsubishi EVO X 2008-2015 Type_Turbo Outlets / O2 Housing We recommend upgrading the factory

We recommend upgrading the factory valve when running boost above stock levels

Improved Power and Airflow

Single-exit design

Stamped with 4140 plate with 2000 ton pressure at 1260 degrees

ARP Head Studs Mitsubishi EVO X 2008-2015 Type_Turbo Outlets / O2 Housing We recommend upgrading the factoryPart #: 207 4206 Obtaining the optimum cylinder head to block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That's why ARP head studs are popular among leading Sport Compact Import racers. You should know that ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is precisely heat