10-SC490 KPMI, cast iron valve seat. 49mm OD

This 49mm outside diameter valve seat from Kibblewhite Precision Machining is built for heavy-duty use and custom head configurations. With a 38.50mm inside diameter and an 11.00mm height, this U.S.A. made cast iron seat is compatible with leaded, unleaded, and blended fuels. It is engineered for both intake and exhaust use, featuring excellent thermal characteristics that help pull heat away from the valves. The material is specifically chosen to resist micro-welding under extreme conditions. To aid the installation process, the seat includes a leading edge for a cleaner fit. These universal valve seats are sold individually and are ideal for professional engine shops and performance tuners.