Supertech 8mm Shim 3.05mm Thick

This is a Supertech 8mm valve shim, measuring 3.05mm thick. These shims are used to adjust valve lash, which is the small gap between the valve train components and the valve stem. Getting this gap right is crucial for proper engine operation, ensuring the valves seal correctly and the camshaft lobes don't put constant pressure on the valve train.

Supertech makes these shims from hardened steel, which holds up well to the repetitive impact from the camshaft or rocker arm. The 3.05mm thickness is a specific size needed when you're measuring your valve lash and find it's too loose and needs to be tightened up by this exact amount. It's a small part, but it plays a big role in how smoothly your engine runs and how efficiently it breathes.

When you're rebuilding an engine or performing a valve adjustment, having the correct shim sizes on hand is essential. This particular shim is designed for 8mm valve stems, a common size in many performance and some stock applications. Make sure you've accurately measured your valve lash before ordering, as having the wrong size shim will mean you have to pull it apart again.