Sikky Manufacturing - Honda F20C/F22C1 Heat Shielding Intake Manifold Gasket (SM-TN-004)Fits 1999 2009 Honda S2000 and all vehicles with an F20C F22C1 engine swap. About Thermalnator Heat Shield Gaskets Thermalnator is a unique high temperature shielding gasket which replaces the stock intake manifold gasket. Thermalnators cooling properties reduce heat by stopping metal to metal contact between the intake manifold and the engine block. By using a Thermalnator gasket, you will reduce the heat of the air entering your engine, making up to