Supertech Mitsubishi 6.6mm Viton Exhaust Valve Stem Seal (STD Size) - Set of 8

If you're rebuilding the top end of your Mitsubishi engine, especially if you're dealing with worn valve guides or oil consumption issues, replacing the valve stem seals is a critical step. These Supertech seals are made from Viton, a material known for its excellent resistance to heat and oil, making them a solid choice for exhaust valve applications where temperatures can get quite high. They are a standard size, meaning they're designed to fit factory valve stems without modification.

This set includes eight seals, which is exactly what you'll need for a typical inline-four or V8 Mitsubishi engine. Viton seals are a popular upgrade over standard rubber seals because they hold up better over time, especially in performance or high-mileage applications. Proper installation ensures they create a good seal around the valve stem, preventing oil from leaking down into the combustion chamber.