Supertech Nissan RB26 Factory Shim Replacement Dia 12.15mm Thickness 3.85mm

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 meet the precise specifications needed to dial in your valve clearances accurately. They are made to the exact diameter and thickness required, ensuring they seat properly within the valve bucket.

These shims are a well-built replacement for your original RB26 valve shims. They are manufactured to the correct 12.15mm diameter and this specific listing is for the 3.85mm thickness. Using the correct shims ensures that your valves open and close at the right time, which is essential for proper engine operation, especially in a high-performance application like the RB26. Having the right shims on hand means you can complete your engine build without hunting for obscure parts.