Supertech Nissan 7mm Viton Valve Stem Seal - Set of 12

Supertech is known for making well-built internal engine components, and these 7mm Viton valve stem seals are a prime example. If you're rebuilding the top end of your Nissan engine, replacing the valve stem seals is a critical step to ensure proper operation and prevent oil from getting into your combustion chambers. These seals are made from Viton, a material that holds up well to heat and oil, which is exactly what you need inside an engine.

This set includes 12 seals, which is the standard number for most 4-cylinder Nissan engines. Viton is a popular choice for valve stem seals because it offers good resistance to the high temperatures and aggressive oils found in an engine. Replacing these seals is often done when you have the cylinder head off for other work, like replacing valve springs or machining the head. It's a small part that makes a big difference in keeping your engine running cleanly and preventing blue smoke from the exhaust.