10-SC510 KPMI, cast iron valve seat. 50.98mm OD

Kibblewhite cast iron valve seats are a top-tier choice for maintaining the cylinder heads on classic Panheads. Manufactured in the U.S.A., these seats are compatible with leaded, unleaded, and ethanol-blended fuels, ensuring your vintage motor runs strong on modern pump gas. This seat has a 50.98mm outside diameter and a 39.67mm inside diameter, specifically designed to fit 1948 to 1965 Panhead models for both intake and exhaust applications. The cast iron material provides superior heat transfer and resists the micro-welding that can lead to premature valve failure. A leading edge is included to assist with a precise installation. These seats are sold individually, allowing you to get exactly what you need for your next head job.