The HKS Super Cooling Head Gasket Kit for the RB26DETT engine, sized at 88mm bore and 1.6mm thickness, is designed for builders demanding maximum reliability and advanced cooling under extreme conditions. This grommet type head gasket ensures superior sealing strength, preventing failure even when subjected to high boost, elevated combustion pressures, and intense circuit use. Engineered specifically to enhance thermal management, it is an essential upgrade for Nissan Skyline GT-R enthusiasts pushing their RB26 to higher performance levels.
What sets this Super Cooling version apart is the optimization of water passages around the cylinder head. By widening and refining these channels, coolant flow is dramatically improved, reducing hot spots and lowering the overall temperature variance between cylinders. This results in more stable combustion, an advanced knock ignition limit, and greater reliability when running at high horsepower or during extended track sessions. Internal HKS testing demonstrated measurable improvements in thermal balance, proving its capability to withstand the most demanding conditions.
The 1.6mm thickness is particularly beneficial for overhauls that include surface machining of the cylinder head, offering precise fitment and long-lasting performance. When paired with strengthened head bolts, such as ARP hardware, the sealing efficiency of this gasket is further enhanced, making it the perfect foundation for serious RB26 builds. The kit also includes intake, exhaust, and throttle body gaskets for a complete installation package. Terra Firma Automotive offers this premium HKS solution to help your Skyline achieve both durability and performance without compromise.
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