Вставное седло выпускного клапана, наружный диаметр 42,98 мм Caterpillar 4S8902

An Exhaust Valve Seat Insert is used in the cylinder head of an internal combustion engine. The main purpose of the exhaust valve seat insert is to prevent direct metal contact between the valve face and the cylinder head. Without the insert, the constant pounding and friction between the two surfaces would lead to rapid wear and eventual engine failure.Attributes:• Helps Seal the Valve to prevent the leakages of fluids• Withstands High pressure of fluid passages and high temperatureApplications:An Exhaust Valve Seat Insert provides a wear-resistant seating surface for the exhaust valve. This separation minimizes wear and ensures a reliable seal, contributing to improved engine efficiency and longevity.