Supertech GM Opel 5.0mm Stem Viton Valve Stem Seal - Set of 16

Supertech is known for making well-built engine components, and this set of 16 Viton valve stem seals for GM Opel engines with 5.0mm stems is a great example of their work. These seals are crucial for keeping oil from getting into your combustion chambers, which can cause blue smoke, fouled spark plugs, and reduced engine performance. Replacing worn-out seals is a common step when rebuilding an engine or performing top-end work to ensure everything runs clean and efficiently.

Made from Viton, these seals are built to handle the heat and chemical environment inside your engine. Viton is a high-performance material that holds up well to oil and high temperatures, making it a solid choice for valve stem seals. This set includes 16 seals, which is enough for most common GM Opel engines. Installing these seals is typically done with the cylinder head removed, often using a specialized tool to press them onto the valve guides.