Genuine OEM Hyundai Water Jacket Insert, part number 211712M112. This component is installed within the engine block's water jacket, specifically on the exhaust side, to precisely manage and direct coolant flow through the engine's cooling passages. It ensures efficient heat dissipation and maintains optimal engine operating temperatures. Using a genuine OEM insert guarantees the correct material and design, providing reliable performance and contributing to the long-term health of the engine's cooling system.