Genuine OEM Audi Engine Coolant Hose, part number 05A121057B. This flexible hose is crucial for connecting the engine block to the heat exchanger, ensuring the efficient transfer of coolant to maintain optimal engine operating temperatures. It is a vital component within the engine's cooling and lubrication system. Weighing approximately 0.1131 kg and measuring 0.2 m in length, it is designed for precise fitment and flexibility. Choosing a genuine OEM coolant hose guarantees the correct material composition, resistance to high temperatures and pressures, and exact routing geometry to prevent leaks and ensure reliable fluid transfer.