ARP Head Studs | DSM & Evo

ARP head studs increase strength and reliability preventing common head gasket failures that are usually attributed to the cylinder pressure increases seen when boosting the performance of your 4G63 engine. Whether you’re already pushing the limits of the stock head bolts or simply wanting to add some reassurance to your build, these studs are a sure way to keep your head fastened to the block preventing costly future repairs. Material Options: ARP 425's (2000)  Heat treatable steel alloy with a 220K+ tensile strength rating ARP 625's (Custom Age) Custom age super alloy corrosion resistant formula with a 260K+ tensile strength rating Features And Benefits: Increased Strength & Durability Up To 260KPSI Tensile Strength Rating Complete Kit For The Evo 4-9 & 7 Bolt DSM