ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Injectors This ULTIMATE OIL PICKUP uses

This ULTIMATE OIL PICKUP  uses a

2002+ WRX (Will not fit CVT)

please verify vehicle compatibility in Confirmed Applications

They are specifically designed to reduce weight and inertia for better engine response

These are heat treated to a hardness of 26-32 HRC and then cyro treated for improved physical properties

ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Injectors This ULTIMATE OIL PICKUP usesThis newly formulated super alloy demonstrates superior fatigue cycle life, tensile strength and toughness with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP 35 as the material of choice in the high strength, super alloy field. Typical tensile strength is 260,000 280,000 psi.