RCM O Ringed Thermal Spacer Kit V3/4 39381-T60-G01 Excellent Nissan quality and a

Excellent Nissan quality and a common pain point on the SR20DET

running multiple tests with various prototypes we finally made an all-around satisfying product

It can be installed on vehicles with genuine SU carburettors (heat shield modification required)

51220-S84-305

Developed to maximise power and at the same time minimise turbo lag ensuring you have perfect power delivery for your intended application

RCM O Ringed Thermal Spacer Kit V3/4 39381-T60-G01 Excellent Nissan quality and aThe RCM O Ringed Thermal spacer kit contains everything required to install our Phenolic Spacers to your Subaru. 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 heads is by the clever integral double "O ring" design meaning conventional manifold gaskets are no