A reliable head gasket is fundamental when building or refreshing a Nissan RB25DET. The Tomei Cylinder Head Gasket (part number TA4070-NS06A) is a multi-layer metal gasket designed specifically for the RB25 engine family, featuring an 87.0 mm bore and 1.2 mm thickness. This specification is commonly selected for performance builds that aim to maintain strong compression while benefiting from improved sealing under higher boost and temperature conditions.
Factory head gaskets can become a weak point once cylinder pressures rise. Tomei’s design uses reinforced sealing around the combustion chambers together with carefully engineered water and oil passages to deliver better resistance to blowouts and more consistent long-term performance. The 1.2 mm thickness allows builders to fine-tune compression ratio when paired with specific pistons and deck heights, making it a versatile choice for both street and higher-output RB25 applications, including NEO variants.
At Terra Firma Automotive, we supply this genuine Tomei 87.0-1.2 mm head gasket for Skyline and Stagea owners running the RB25DET. Whether you are assembling a refreshed engine or preparing a more aggressive turbo setup, this gasket provides the durability and precision expected from Tomei’s Japanese engineering. Choose Terra Firma Automotive for authentic components that form a solid foundation for your RB25 build.
- Genuine Tomei Cylinder Head Gasket
- Part Number: TA4070-NS06A
- Application: Nissan RB25DET / RB25DE (including NEO)
- Bore size: 87.0 mm
- Thickness: 1.2 mm
- Multi-layer metal construction
- Reinforced combustion chamber sealing
- Precision water and oil passage design
- Suitable for street and performance builds
- Allows compression ratio adjustment
- Improved resistance to heat and cylinder pressure
- Direct fit for RB25-powered Skyline and Stagea models
- Stronger alternative to factory head gaskets
- Trusted Japanese performance component
- Available from Terra Firma Automotive
Questions & Answers
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Good Day, Do you guys have these currently in stock? Everywhere else they are out of stock
Hi, as of 1/14/2021, we have one in stock. You may want check with us first in the future as we try to stock as much as possible (unlike competitors) :) Our goal is to support enthusiasts who are excited to work on their cars! Thanks!