The ARP 625+ Headstud Kit for Subaru EJ 20 and 25 turbo engines delivers superior clamping force compared to stock bolts, ensuring a secure seal between the cylinder head and block. Designed to withstand high boost pressures, these studs significantly reduce the risk of head gasket failures, enhancing engine reliability and durability. Perfect for performance tuning and demanding turbocharged setups, this kit gives your engine the strength and confidence it needs under extreme conditions.

Cylinder head studs manufactured using Aircraft Grade Steel.
• Cylinder head stud thread pitch (Block): M11X1.25.
• Cylinder head stud thread pitch (Cylinder Head): M11X1.25.
• Cylinder head stud length: 197mm.

Kits comprises of:

X12 Performance studs.
X12 Heat treated nuts.
X12 Heat treated washers.
X1 Sachet of Moly Grease.
X1 Fitting Instruction Guide.