3mm Thermal Teflon Intake Manifold Gasket for Honda K20Z3, K24A2, K24A4. Fits Honda K20Z3, K24A2, K24A4, and K24A8 (RBC Style). (RBC Style). WCY TECHS high temperature thermal Teflon material protects against heat soak and maximizes horsepower gains by reducing heat transfer.