Supertech Nissan RB26 Factory Shim Replacement 12.15mm Diameter 3.90mm Thick

Supertech offers this 3.90mm thick valve shim, designed as a direct replacement for the factory shim in Nissan RB26 engines. Proper valve clearance is crucial for engine performance and longevity, ensuring the valves open and close at the correct times relative to the piston's position. These shims are essential for adjusting that clearance when rebuilding or servicing the valvetrain.

This shim measures 12.15mm in diameter and is precisely manufactured to meet the specifications required for the RB26 engine. Using the correct size shim is key to achieving the factory-recommended valve lash, which helps prevent issues like valve float at high RPM or excessive wear on the camshaft and rocker arms. Supertech focuses on providing well-built components for engine builders and tuners.