ALMANZAR MOTORSPORTS Thermal Intake Manifold Gasket for 02-06 RSX/02-05 Civic Si

The ALMANZAR MOTORSORTS Thermal Intake Manifold Gasket is a performance upgrade designed to reduce heat soak and improve power delivery for your 2002-2006 Acura RSX or 2002-2005 Honda Civic Si. Engineered from a high-quality thermal-resistant polymer, this gasket prevents unwanted heat transfer from the cylinder head to the intake manifold. By keeping intake air temperatures cooler, you gain a more consistent powerband and improved efficiency for both street and track applications.

Unlike the thin stamped steel OEM gasket, which seals but does little to control heat, the gasket acts as an insulating barrier between aluminum engine components. This helps maintain lower intake manifold temperatures, improving air density and combustion efficiency. The result is a simple but effective upgrade that can unlock measurable performance gains by ensuring your engine consistently breathes cooler, denser air.

Built for durability and precision fitment, this gasket installs easily as a direct replacement for the factory part. Whether you’re looking to maximize naturally aspirated performance or preparing for a forced induction setup, the Thermal Intake Manifold Gasket is an essential upgrade to help your K-series engine run stronger and more efficiently.