DJ Rock HGS451 Engine Cylinder Head Gasket Set

Engine Cylinder Head Gasket Set for Mazda Protege

DJ Rock HGS451 is a premium engine cylinder head gasket set for top-end engine service on the 1990-1994 Mazda Protege. It is built to restore sealing between the cylinder head and engine block, helping maintain combustion pressure and control oil, coolant, and exhaust leaks.

• Premium grade engine cylinder head gasket set
• 83 mm cylinder bore diameter
• Non-asbestos sealing materials
• Includes gaskets and seals for top-end engine reassembly
• Compatible with 1990-1994 Mazda Protege, N/A

Sealing Components and Materials

This HGS451 gasket set is engineered for cylinder head replacement and complete upper-engine service. It uses a mix of sealing materials selected for specific engine locations, including MLS for head gasket applications, graphite and non-asbestos composite materials where required, and rubber, silicone, and EPDM for oil and coolant sealing points. Viton valve stem seals are used for heat and oil resistance. This part cross-references NTK 21002 for the same application.

Common Repair Uses

• Head gasket failure causing coolant loss or combustion leakage
• Oil seepage from upper-engine sealing surfaces
• Coolant leaks at intake, thermostat, or valve cover sealing points
• Compression loss after cylinder head service
• Reassembly after Mazda Protege cylinder head removal

Installation Notes

Clean all mating surfaces thoroughly before installation and inspect the cylinder head and block for warpage or damage. Follow the factory torque sequence and torque specifications during reassembly. Torque-to-yield head bolts must not be reused; replace them with new hardware when required by the engine procedure. Verify all sealing surfaces, cam seals, valve stem seals, and intake/exhaust gasket locations before final assembly. Fits 1990-1994 Mazda Protege, N/A. Fits 1990-1994 Mazda Protege, N/A.

Quality Assurance

DJ Rock HGS451 is manufactured to meet or exceed OEM quality standards using non-asbestos materials for dependable engine sealing. The set is built for professional-grade top-end engine repair and cylinder head replacement on Mazda Protege applications.