Supertech GM/Opel 5.0mm Viton Integral Valve Stem Seal - Set of 8

Made from Viton, these integral valve stem seals from Supertech are built to handle the heat and oil exposure common in engines. The 5.0mm stem size is specific for certain GM and Opel applications, ensuring a proper fit when you're rebuilding or refreshing your engine's top end. Integral seals like these are designed to press directly onto the valve guide, providing a reliable barrier against oil getting past the valve stem and into the combustion chamber. This helps maintain consistent oil levels and prevents excessive smoke from the exhaust.

When you're working on an engine that requires this specific size, using the correct valve stem seals is crucial for proper operation. Viton is a well-known material for its resistance to high temperatures and aggressive fluids, making it a solid choice for this critical sealing application. This set includes eight seals, enough for a typical 4-cylinder or V8 engine, ensuring you have what you need for the job.