71012-8 KPMI custom valve guide seals

These Kibblewhite valve guide seals are a high-quality choice for any custom engine project. Made from solid Viton rubber, they are designed to provide superior sealing and heat resistance compared to standard components. This set is sized for 5/16-inch valve stems and 0.500-inch valve guides, with an overall length of 0.465 inches and an outside diameter of 0.550 inches. Viton is the industry standard for high-performance seals because it maintains its flexibility and sealing integrity under the extreme temperatures found in Harley-Davidson cylinder heads. These seals are a reliable way to ensure proper oil control in your top end. They are sold as a set of eight, providing everything needed for a standard V-twin head rebuild.