Supertech Subaru EJ20/EJ25 Manganese Bronze Exhaust Valve Guide 6mm Stem OD 11.08mm

If you're rebuilding the top end of your Subaru EJ20 or EJ25 engine, getting the valve guides right is crucial for proper valve sealing and longevity. This exhaust valve guide from Supertech is made from manganese bronze, a material known for its excellent wear resistance and ability to handle the heat of exhaust gases.

This guide is specifically designed for a 6mm valve stem diameter and has an outer diameter of 11.08mm, ensuring a precise fit within the cylinder head. Manganese bronze is a popular choice for exhaust guides because it offers good lubrication properties and can withstand the high temperatures found in the exhaust port, helping to prevent premature wear and sticking valves. Installing these guides is a key step in ensuring your engine runs smoothly and reliably after a rebuild.