ARP 11mm Head Studs Subaru WRX 2002-2014 / STI 2004-2021 Subaru EJ20 & EJ25 Turbo

Experience unparalleled strength and durability with ARP Pro Series cylinder head studs designed for 11mm applications on Subaru models. These head studs are crafted through cold-forging to ensure molecular integrity, and are then heat-treated prior to thread rolling and machining. Choose from kits with 12-point nuts and hardened parallel washers for an even load distribution and accurate torque readings. Designed for high-performance enthusiasts, these head studs provide the robustness needed to prevent head lifting, making them a must-have for racecars, rally cars, overlanders, or even daily drivers seeking enhanced performance. With a wide selection of models ready to ship, you can trust ARP Head Stud Kits to elevate your Subaru's power and boost levels beyond factory specifications.

• Made using premium grade alloy materials that deliver superior fatigue cycle life
• 11mm profile
• Each stud is placed vertically in special racks
• Heat treated to 220,000 psi
• Thread-rolled to provide 1000% better fatigue strength
• Resistance to atmospheric corrosion and oxidation
• Includes (12) head studs
• Includes (12) 12-point nuts
• Includes (12) washers
• Socket Size(s) 9/16 12pt, 3/16 Allen

Fitment:

• 2002-2014 Subaru WRX
• 2004-2021 Subaru STI
• 2004-2013 Subaru Forester XT
• 2005-2009 Subaru Outback XT
• 2005-2012 Subaru Legacy GT
• 2004-2006 Subaru Baja Turbo