Genuine OEM Audi Coolant Hose, part number 04E122447BE. This hose is an essential component of the engine cooling system, responsible for transporting coolant, specifically connecting to the expansion tank. It ensures efficient heat transfer and maintains optimal engine operating temperatures. Weighing approximately 0.2161 kg, this hose is designed for durability. Using a genuine OEM coolant hose guarantees the correct material composition for resistance to heat and pressure, precise routing, and secure connections, which are critical for preventing leaks and ensuring the long-term health of the engine.