Supertech BMW N55/S55 6mm Stem Manganese Bronze Exhaust Valve Guide - Single (Drop Ship Only)

If you're rebuilding the top end of your BMW N55 or S55 engine, getting the valve guides right is crucial for proper valve sealing and longevity. This Supertech exhaust valve guide is made from manganese bronze, a material known for its good wear resistance and ability to handle the heat found in exhaust ports.

This guide is designed for the 6mm stem exhaust valves commonly found in these performance BMW engines. Manganese bronze offers a good balance of hardness and lubricity, which helps prevent valve sticking and wear over time. It's a solid option when you need to replace worn guides during an engine overhaul.