Genuine OEM Audi Auxiliary Heating Coolant Hose, part number 1K0819374A. This flexible rubber hose is specifically designed to transport coolant within the vehicle's auxiliary heating system. It ensures efficient heat transfer and proper system operation. Weighing 0.14 kg, this hose is manufactured in Hungary and engineered to withstand temperature and pressure fluctuations. Choosing genuine OEM guarantees correct routing geometry, material composition, and resistance to coolant chemicals for leak-free and reliable performance.