Supertech Nissan RB26 Factory Shim Replacement Dia 12.15mm Thickness 3.575mm

When you're rebuilding the top end of your Nissan RB26 engine, getting the valve lash set just right is critical for performance and longevity. These factory shim replacements from Supertech are designed to help you achieve that precise adjustment. They are made to the exact dimensions needed to replace your stock shims, ensuring a proper fit within the valve train.

This particular shim measures 3.575mm thick and has a 12.15mm diameter, matching the specifications of the original Nissan parts. Using well-made replacement shims like these helps maintain the correct valve clearance, which is essential for proper engine operation. They are a straightforward part to swap in when you have the valve covers off for other engine work.