ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Cam Bolts "no sleeves to drop"

"no sleeves to drop"

The beehive shape is more stable than standard single or dual cylindrical springs

Silicon-based beading is applied on critical areas to improve sealing around all cooling water and oil passages

NEW AS OF 8/2015 precision block decking registering from the mains

Outfront/ARP name stamped on the head

ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Cam Bolts "no sleeves to drop"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.