The RCM Thermal Gasket kit contains everything required to install our Phenolic Spacers to your Impreza. The kit is designed to aid in the reduction of the inlet air temperature, by isolating the inlet manifold from the heat generated by the engine’s cylinder heads. By reducing the temperature of the inlet manifold, the temperature of the inlet charge is alos reduces. The density of cooler is greater than that of warm air, and a denser intake air charge contains more oxygen which results in the potential for increased power and torque.
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