IAG Performance 1/2 in Head Stud Set 1/2" Head Stud Set for Subaru EJ25 and FA20 DIT

Subaru: WRX STI 13 - 21 Sport-tech / Tsurugi Edition / Launch Edition / Sport / Base / Limited / Series.HyperBlue / Kanrai Edition / STI / Type RA / S209, Subaru: WRX 12 - 21 Limited / Base / STI, Subaru: BRZ 13 - 20, Subaru: Impreza 02 - 14 WRX STI Special Edition / WRX SE / WRX GT / WRX Premium / 2.5 GT / WRX STI Limited / WRX / WRX STI / WRX Limited / WRX TR, Subaru: Forester 04 - 18 XT Sports / Sports 2.5 XT / XT / XT Premium / XT Limited / XT Touring / 2.5 XT, Toyota: 86 17 - 20, Scion: FR-S 13 - 16, Subaru: Outback 05 - 09 2.5 XT / XT Limited / XT, Subaru: Baja 04 - 06 Turbo, Saab: 9-2X 05 - 06 Aero, Subaru: Legacy 05 - 13 2.5GT / GT spec.B / GT Limited / GT

• Heads must be modified to accept larger studs.
• Kit Includes: 1/2" Head Studs (x12), 1/2" Head Stud Washers (x12), 1/2" Head Stud Nuts (x12)
• Requires drilling and tapping.

The IAG Performance 1/2 Inch Head Stud Set is manufactured by ARP and is designed for use on high horsepower Subaru EJ25, FA20, and FA20 DIT engines. Due to the larger size of the head studs, a greater load can be placed on the fasteners, and in turn it aids in preventing cylinder heads from lifting in race applications. The larger size of the head studs requires the case halves to be drilled and tapped. The cylinder heads will also require drilling to accept the larger studs.