Supertech Nissan RB26 Factory Shim Replacement Dia 12.15mm Thickness 3.125mm

With a diameter of 12.15mm and a thickness of 3.125mm, these shims are made to replace the factory shims in your Nissan RB26 engine. Proper valve lash adjustment is critical for engine performance and longevity, ensuring that your valves open and close at the right times. These shims allow you to precisely set that clearance.

When you're rebuilding the top end of your RB26, getting the valve lash just right is a key step. These Supertech shims are manufactured to meet the exact specifications needed for this adjustment. Using the correct size shims ensures your engine runs smoothly and efficiently, preventing potential damage from incorrect valve timing.