Fel-Pro 451 RR Engine Valve Stem Oil Seal

Made from a durable nitrile rubber compound, the Fel-Pro 451 RR valve stem oil seal is built to keep oil from getting into your engine's combustion chambers. When these seals wear out, you'll often notice blue smoke coming from your exhaust, especially on startup or when you let off the gas. This happens because oil is leaking down the valve stems and burning up. Replacing them is a common part of rebuilding an engine's top end or addressing oil consumption issues.

This particular seal features a robust nitrile rubber construction, chosen for its resistance to oil and heat, which are constant factors around the valves. The design ensures a snug fit around the valve stem, creating a reliable barrier. Installing these seals is typically done when the cylinder head is off the engine, making it a good time to address any other related components.