Genuine OEM Audi Engine Coolant Hose, part number 4KE145930F. This hose transports coolant within the engine cooling system, ensuring optimal engine temperature regulation. It is a small, curved hose, weighing 0.105 kg and measuring 0.23 meters in length. Using a genuine OEM hose ensures correct routing geometry, material composition, and resistance to temperature and pressure fluctuations for reliable, leak-free performance.