Supertech 8mm Shim 3.00mm Thick

This is a Supertech 8mm shim, specifically 3.00mm thick. It's designed to be used with valve spring retainers in engine builds where precise valve spring height adjustment is needed. Getting the correct installed height for your valve springs is crucial for proper valve train function and can affect performance and reliability.

Supertech makes these shims from solid steel, ensuring they can handle the forces within the engine. The 3.00mm thickness is a common size used to make small adjustments to the installed height of the valve spring assembly. This helps ensure your valve springs are seated correctly, which is important for preventing valve float and maintaining consistent valve control at higher RPMs.