Genuine OEM Audi Coolant Hose, part number 7L8122101E. This hose is crucial for transporting coolant throughout the engine cooling system, maintaining optimal operating temperatures. It connects to the radiator assembly. Weighing 0.45 kg and measuring approximately 0.477 meters in length, this hose is designed for precise fitment and durability. Using a genuine OEM coolant hose ensures proper routing, material resistance to heat and pressure, and prevents leaks that could lead to engine damage.