ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Cam Bolts The intake manifold will still

The intake manifold will still require 19mm Spacers in order to clear AVCS solenoids if installing on AVCS heads

"no sleeves to drop"

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

oil slots on the King XPG bearings are replaced with oil holes for better oil distribution in the groove and more consistent oil flow

Outfront/ARP name stamped on the head

ARP Head Studs for Subaru EJ20-EJ25 DOHC 625+ Cam Bolts The intake manifold will stillThis 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.