257-9168: 48mm Inner Diameter Valve Seat Insert

A Valve Seat Insert creates a tight seal between the valve and the cylinder head. The insert provides a smooth and flat seating surface for the valve face, ensuring proper sealing and preventing gas leakage during the combustion process. Valve seat inserts are designed to dissipate heat generated during the combustion process. They are in direct contact with the hot gases and must transfer heat away from the valve to prevent overheating and potential valve failure. Attributes: • Ensures proper sealing and prevent gas leakage • Designed to prevent overheating Applications: A Valve Seat Insert is designed to provide a durable and wear-resistant seating surface for the engine's intake and exhaust valves in the Cylinder Head.