Genuine OEM Audi Coolant Flange with Sealing Ring, part number 03G121132B. This component is designed to connect coolant hoses and prevent leaks within the engine cooling system. It typically mounts to the engine block or cylinder head, directing coolant flow. Weighing 0.148 kg, it is constructed from durable plastic and includes an integrated sealing ring for a secure fit. A genuine OEM coolant flange ensures precise fitment, proper sealing, and resistance to thermal cycling, critical for maintaining engine cooling system integrity.