ARP Custom Age 625+ Head Stud Kit | Subaru WRX/STi EJ20 & EJ25 (260-4704)

Subaru WRX & STi (EJ20 and EJ25) Head Studs

CUSTOM AGE 625 PLUS®: This 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.

Features

• 625 Super-Alloy
• Tensile strength: 260,000+ PSI

Recognizing Head Stud Failures

Applications

• Subaru WRX & STi (EJ20 and EJ25)

What's in the box?

• ARP head studs
• Parallel ground washers
• 8740 chromoly steel 12pt nuts
• (1) .5 oz. pack of ARP Ultra-Torque fastener assembly lubricant

Warranty

• ARP Warranty