DJ Rock HBK708 Engine Cylinder Head Bolt Set

Engine Cylinder Head Bolt Set for Subaru EJ Engines

DJ Rock HBK708 is a premium engine cylinder head bolt set for Subaru EJ-series applications. Built for secure cylinder head retention under heat and load, it supports proper gasket sealing and consistent clamping force during engine service.

Key Features

• Premium-grade cylinder head bolt set for engine rebuild and repair work
• Heat-treated carbon or alloy steel construction for strength and fatigue resistance
• Engineered for accurate torque application and stable clamping force
• Designed for thermal cycling and high-pressure engine environments
• Cross-references MAHLE GS33573 for the same application

Detailed Description

DJ Rock HBK708 is a precision-engineered head bolt kit for Subaru Impreza and Subaru Legacy models with EJ18E, EJ22, and EJ22T engines. It is used to secure the cylinder head to the engine block and maintain sealing integrity during repeated heat cycles. This part number, HBK708, is built to meet or exceed OEM quality expectations for engine hardware service.

Fits 1995-2001 Subaru Impreza, N/A; EJ22; One set for complete engine servicing. Fits 1990-1999 Subaru Legacy, N/A; EJ22; One set for complete engine servicing. Fits 1993-1997 Subaru Impreza, N/A; EJ18E; One Set Services Complete Engine. Fits 1991-1994 Subaru Legacy, N/A; EJ22T Engine Cylinder Head Bolt Set, One set services complete engine.

Common Repair Uses

• Head gasket service on Subaru Impreza EJ22 and EJ18E engines
• Cylinder head reinstallation after engine teardown
• Restoring proper clamping force after overheating or gasket failure
• Replacing torque-to-yield head bolts during top-end engine repair
• Addressing coolant loss, compression loss, or combustion sealing issues tied to head fastener wear

Installation Notes

Follow the factory torque sequence and tightening specifications for the exact engine code. Torque-to-yield head bolts must not be reused after removal. Verify cylinder head and block surfaces are clean, flat, and free of gasket residue before installation. Confirm engine code and model year before ordering HBK708.

Quality Assurance

DJ Rock HBK708 is manufactured from durable, heat-treated steel and built to deliver consistent fastening performance under thermal and mechanical stress. The design follows OEM-level quality expectations for Subaru EJ engine service and long-term gasket sealing integrity.