Genuine OEM Audi Coolant Hose Flange, part number 028121053N. This component serves as a critical connection point within the engine cooling system, linking various coolant hoses to the engine block and other cooling components. Its function is to ensure a sealed and efficient flow of coolant, which is vital for regulating engine temperature. Positioned directly on the engine, it is designed for precise fitment and leak-free operation. Weighing approximately 0.121 kg, this flange is constructed from durable materials to withstand high temperatures and pressures. Using a genuine OEM coolant flange ensures proper sealing, material integrity, and reliable performance of the entire cooling system.