Proper cylinder head sealing is critical on any RB20DET build, particularly when higher boost or elevated combustion pressures are involved. The Tomei Cylinder Head Gasket (part number TA4070-NS07A) is a multi-layer performance gasket designed for the Nissan RB20DET with an 80.5 mm bore and a 1.2 mm thickness, providing a thinner option for builders seeking a specific compression height.
Tomei engineered this gasket to address the sealing challenges that conventional designs can face under increased cylinder pressure and heat. The multi-layer construction and reinforced sealing structure help maintain a consistent seal around the combustion chambers, coolant passages, and oil routes. The 1.2 mm thickness offers a lower stack height compared with thicker alternatives, allowing more precise control over quench and compression ratio during engine assembly or performance upgrades.
This gasket is well suited to RB20DET engines in Skyline and related platforms that are being rebuilt or modified for improved reliability and output. At Terra Firma Automotive, we supply this genuine Tomei Cylinder Head Gasket as a trusted sealing solution for RB20 applications. Whether you are performing a careful stock-type refresh or preparing the engine for higher performance, a properly specified head gasket is fundamental to long-term durability. Choose Terra Firma Automotive for authentic Tomei engine components that support quality RB-series builds.
- Genuine Tomei Cylinder Head Gasket
- Part Number: TA4070-NS07A
- Application: Nissan RB20DET
- Bore size: 80.5 mm
- Thickness: 1.2 mm
- Multi-layer performance construction
- Reinforced sealing design for higher cylinder pressures
- Thinner profile for compression and quench tuning
- Improved resistance to boost and heat-related failure
- Helps maintain consistent combustion, water, and oil sealing
- Suitable for street and performance rebuilds
- Trusted Japanese performance gasket engineering
- Ideal for engine assembly and upgrades
- Available from Terra Firma Automotive
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