Supertech 6mm Valve Stem Seal OD 12.2mm Viton - Set of 8

If you're rebuilding the top end of your engine, replacing the valve stem seals is a crucial step. These Supertech valve stem seals are made from Viton, a material known for its excellent resistance to heat and oil, which helps them last longer in the demanding environment of the engine's combustion chamber. This set includes eight seals, enough for a typical four-cylinder engine, and they feature a 6mm stem diameter with a 12.2mm outer diameter to fit specific valve guides.

Using Viton for these seals means you can expect improved durability compared to standard rubber seals, especially under high temperatures. They help prevent oil from seeping down the valve stems into the combustion chamber, which can cause blue smoke on startup and increased oil consumption. Proper installation ensures a good seal, contributing to better engine performance and cleaner emissions.