1984-2003 Harley Davidson Touring / Sportster / Softail / Dyna Valve Stem Seal - Steel (5/16 Stem / .530 Guide)

This steel valve stem seal is precision-manufactured to provide a high-strength oil control solution within the cylinder head. By establishing a rigid and reliable seal around the valve stem, it effectively prevents oil from entering the combustion chamber through the guides—an essential function for minimizing oil consumption and maintaining clean spark plugs. The robust steel construction is designed for maximum structural integrity, ensuring the seal remains securely seated even under the high-vibration and extreme thermal conditions of the Evolution engine series.

As a direct-fit replacement, this component is engineered to restore proper valve train sealing for 1984-2003 Harley Davidson Dyna, Softail, Sportster, and Touring models equipped with the Ironhead, Evolution, or Twin Cam 88 engine.