GSC P-D Mitsubishi 4B11T Manganese Bronze Exhaust Valve Guide +.003in Oversize OD - Single

This is a single exhaust valve guide from GSC Power Division, made from manganese bronze for your Mitsubishi 4B11T engine. Valve guides are crucial for keeping your valves aligned as they move up and down, ensuring a proper seal against the valve seat. When rebuilding or modifying your engine, especially with performance cams or higher boost, replacing worn guides or installing new ones is a key step for reliable operation.

This particular guide is made from manganese bronze, a material known for its good wear resistance and ability to handle the heat found in exhaust ports. It's also manufactured to be +.003 inches oversize on the outside diameter, which is helpful if the cylinder head bore has been opened up slightly during machining or if you need a snugger fit. GSC Power Division is a well-known name in performance engine components, and these guides are built to handle the demands of performance applications.