Hybrid Racing Thermal Intake Manifold Gasket – Fits 02-06 Acura RSX & 02-05 Honda Civic Si K20A Series. K20A / K20A2 / K20A3 / K20Z1. 2002-2006 Acura RSX. Upgrade your engine with the Hybrid Racing Thermal Intake Manifold Gasket designed specifically to reduce heat transfer and improve performance on K-series engines.