Genuine OEM Audi Coolant Hose, part number 5WA122051K. This vital component is responsible for circulating engine coolant, facilitating heat exchange to maintain optimal engine operating temperatures. It is positioned within the engine cooling system, connecting the radiator to other coolant passages. Weighing 0.557 kg, this hose features a specific molded shape for precise routing and fitment. Using a genuine OEM coolant hose ensures the correct material resistance to heat and pressure, exact routing geometry, and proper connection points to prevent leaks and maintain cooling system integrity.