Genuine OEM Hyundai Exhaust Valve Seat, part number 221132U000. This component is pressed into the cylinder head and provides a durable, precision-machined sealing surface against which the exhaust valve closes. Its function is crucial for maintaining proper engine compression and efficient exhaust gas expulsion. Genuine OEM valve seats are manufactured from specific alloys to withstand extreme temperatures and pressures, ensuring long-term durability and optimal engine performance.