ARP CA625+ Head Stud Kit - Subaru EJ Series DOHC

The ARP 260-4704 head stud kit is listed for Subaru EJ Series DOHC. The fasteners secure the cylinder head to the block; their application, installed length and preload must work with the chosen head and gasket arrangement.

Technical Highlights

• Manufacturer part number: 260-4704
• Application/configuration: Subaru EJ Series DOHC
• Material: Custom Age 625+

Custom Age 625+ combines high strength and fatigue resistance with resistance to atmospheric corrosion and oxidation. It is a material specification, rather than a guaranteed power or boost rating for the assembled engine.

Selection Guidance

Fastener preload supplies the clamping force at the head-to-block joint. Gasket sealing also depends on suitable deck finish, component condition and the correct assembly procedure.

Match the engine and any specified aftermarket cylinder heads or block to the listed configuration. Do not assume that related engines use the same fastener dimensions.

Installation Considerations

Check block threads, fastener engagement and cylinder-head clearance during trial assembly. Follow the instructions for this exact part number, including lubricant locations, washer orientation and tightening sequence. Washer seating and lubrication requirements vary by kit.

Vehicle Fitment