Supertech Nissan VR38 Manganese Bronze Exhaust Valve Guide 6mm Stem - Set of 12

This set includes twelve (12) Supertech Manganese Bronze Exhaust Valve Guides, each designed for a 6mm stem. These guides are crucial components within your engine's cylinder head, ensuring the exhaust valves move smoothly and maintain proper alignment as they open and close. When rebuilding or refreshing the top end of your Nissan VR38 engine, replacing worn valve guides is a key step to restoring proper valve sealing and engine performance.

Manganese bronze is a well-regarded material for valve guides because it offers good wear resistance and lubricity, which helps reduce friction and heat buildup. This can contribute to longer guide and valve life, especially under the higher temperatures found in exhaust ports. The 6mm stem size is specific to certain valve applications, ensuring a precise fit for your engine's needs. Installing new valve guides requires careful attention to detail and proper tooling to ensure they are seated correctly and honed to the correct clearance for your valves.