10-SC523 KPMI, cast iron valve seat. 52.32mm OD

These Kibblewhite cast iron valve seats are the perfect solution for Shovelhead owners looking for a durable replacement seat. Manufactured in the U.S.A., they are fully compatible with leaded, unleaded, and ethanol-blended fuels. This seat is sized with a 52.32mm outside diameter and a 39.67mm inside diameter, making it the correct fit for the exhaust side of 1966 to 1984 Shovelhead models. The material offers exceptional thermal characteristics, helping to pull heat away from the valve and resisting micro-welding at the seat face. Each seat includes a leading edge to help guide it into place during installation. These are sold individually and are a high-quality choice for any professional engine builder or dedicated home mechanic.