GSC P-D Honda K-Series VTEC K20/24 Manganese Bronze Exh Valve Guide Stopper Style 6mm ID - Single

This is a single exhaust valve guide stopper from GSC Power Division, made for Honda K-Series VTEC engines, specifically the K20 and K24. It's designed to work with 6mm valve guides and uses a stopper style installation.

This part is made from manganese bronze, a material known for its good wear resistance and self-lubricating properties, which is beneficial in the high-heat environment of an exhaust valve guide. The stopper style means it's intended to be pressed or seated into a specific location to prevent the valve guide from moving. It's a small but important piece for ensuring proper valve train alignment and function, especially when you're rebuilding or modifying the cylinder head.