Genuine OEM Audi Engine Coolant Hose, part number 1EA121057S. This hose is designed to transport coolant efficiently, playing a vital role in regulating engine temperature and preventing overheating. It is a critical component within the engine cooling system. Weighing 0.0758 kg and measuring 0.22m in length, this hose is engineered for specific routing. Choosing a genuine OEM coolant hose ensures correct material composition for heat and pressure resistance, precise routing geometry, and leak-free connections, which are crucial for the long-term health of the engine.