Genuine OEM Audi Engine Coolant Hose, part number 4H0121061G. This hose transports coolant within the engine cooling system, connecting to the radiator to regulate engine temperature. Weighing 0.05 kg and measuring 0.176 m in length, it is designed for precise fitment and durability. Using a genuine OEM hose ensures proper routing, material integrity, and resistance to thermal cycling and pressure, preventing leaks and maintaining cooling system efficiency.