Blox Racing Thermal Shield Intake Manifold Gasket for 1986-1989 Acura Integra Thermal Shield Intake Manifold Gasket by Blox Racing®. BLOX Racing high performance replacement intake manifold gaskets are CNC-machined out of high temperature resistant thermal polymer composite plastic and are a direct replacement and reusable product. This unique thermal polymer material helps protect against heat soak and reduces the incoming air temperature before it reaches the cylinder head. The cooler incoming air directly results in greater efficiency and power. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an.