Description

This ARP 260-4701 Subaru Head Stud Kit is for Subaru EJ Series DOHC. This set comes complete with undercut 12 point nuts and hardened washers. Manufactured from ARP2000, heat-treated in-house to 220,000 psi tensile strength, and thread rolled after heat-treat to create a fastener that has threads 2000% stronger than others!

ARP 260-4701 Subaru Head Stud Kit Fits:

• Subaru EJ Series DOHC
  

STUDS vs. BOLTS

Virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants, and for good reason!

Heres why: when you use bolts to secure the head, the fastener is actually being twisted while its being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously.

Studs also provide more accurate and consistent torque loading. Using studs ensures easier engine assembly, and proper alignment of both the cylinder head and gasket.

Install a stud in a relaxed mode never crank it in tightly using a jammed nut. Always install the stud hand tight! Then, when applying torque to the nut, the stud will stretch only on the vertical axis.