ARP Phase 2 SOHC Head Stud Kit 99+ Subaru EJ Series

ARP creates their Pro Series cylinder head studs using cold-forged 8740 alloy, known for its superior strength. Before being threaded and machined, each stud undergoes heat-treatment to ensure it maintains its molecular integrity. With the option of 12-point nuts and hardened washers, this kit is designed for an accurate torque reading and even load distribution. The attention to detail in the manufacturing process results in perfectly aligned gaskets and cylinder heads, making ARP studs a necessity for high-performance engines that see increased boost. From the meticulous heat-treating to the precise centerless grinding, every step is taken to produce a top-quality product. You can feel confident that these head studs will withstand the toughest conditions and provide unbeatable performance for your Subaru.

• Fastener Style: Stud
• Undercut Stud: Yes
• Head Style: 12-point
• Fastener Material: 8740 chromoly
• Fastener Finish: Black oxide
• Washers Included: Yes
• Cut to Fit: No
• Socket Size(s) 9/16 12pt, 4mm Allen