RCM O Ringed Thermal Spacer Kit - Spec C 53540-S04-0135 and durability needed to unleash

and durability needed to unleash your engine’s full potential

000 HP at 43 PSI

keeping delicate internal components safe from harm

We also altered the geometry to

RCM O Ringed Thermal Spacer Kit - Spec C 53540-S04-0135 and durability needed to unleashThe RCM O Ringed Thermal spacer kit contains everything required to install our Phenolic Spacers to your Subaru. This kit has been designed to be used on the Spec C model which has the single piece inlet manifold. The kit is designed to aid in the reduction of the air inlet temperatures in the inlet manifold, by isolating the manifold from the heat travelling through from the engine's cylinder heads. Sealing between the spacers, manifold and cylinder