ARP Head Studs EJ Series Phase 2 SOHC Non Turbo (260-4702) | Subaru Impreza 1999-2007 / Baja 2003-2006 / Forester 1999-2007 / Legacy 1999-2007 / Outback 2000-2007

The ARP Head Studs EJ Series Phase 2 SOHC Non Turbo (260-4702) are precision-engineered fasteners designed to replace the factory head bolts on Subaru single-overhead-cam (SOHC) non-turbo engines. Constructed from premium high-strength alloy and manufactured to exacting standards, this head stud kit enhances clamping force, improves head gasket sealing, and boosts durability under high-stress and high-RPM conditions — making it ideal for engine rebuilds, performance upgrades, and long-term reliability.

KEY FEATURES

• High-strength head stud kit engineered for Subaru SOHC non-turbo EJ engines
• Precision manufactured studs, nuts, and washers for accurate fit and consistent performance
• Superior fatigue resistance and tensile strength compared to factory head bolts
• Enhanced clamping force helps maintain reliable head gasket sealing under load
• Complete kit includes studs, nuts, and parallel ground washers for straightforward installation

TECHNICAL SPECIFICATIONS

• Part Number: 260-4702
• Fastener Material: High-strength ARP alloy (heat treated for durability and tensile capacity)
• Included Components: Head studs, parallel ground washers, and nuts specific to SOHC non-turbo EJ engines
• Socket Configuration: 12-point nuts for efficient torque application
• Design Intent: Increase clamping force and sealing integrity versus OEM bolts
• Application: Subaru SOHC non-turbo EJ engines

VEHICLE FITMENT

• Subaru Impreza 1999–2007
• Subaru Baja 2003–2006
• Subaru Forester 1999–2007
• Subaru Legacy 1999–2007
• Subaru Outback 2000–2007

PRODUCT NOTES

• This kit includes head studs, nuts, and washers only; related engine hardware such as main and rod studs are not included.
• Proper installation should follow ARP and OEM torque specifications to achieve optimal clamping force and longevity.
• Use of ARP assembly lubricant or equivalent during installation is highly recommended for proper bolt stretch and performance.
• Professional engine assembly practices and torque sequencing are advised for best results.

ARP delivers precision-engineered, high-strength fasteners and hardware solutions trusted by professional builders, racers, and performance enthusiasts worldwide for uncompromising reliability, durability, and repeatable performance in demanding automotive and motorsports applications.