Genuine OEM Audi Coolant Hose, part number 4M0122101DJ. This flexible hose is essential for transporting coolant throughout the engine cooling system, ensuring efficient heat transfer and temperature regulation. It is positioned to connect various components within the engine bay's cooling circuit. Weighing approximately 0.63 kg and measuring 0.51 meters in length, it is designed for specific routing and flexibility. Choosing a genuine OEM coolant hose guarantees the correct material resistance to heat, pressure, and coolant chemicals, preventing leaks and ensuring reliable performance.