Genuine OEM Audi Coolant Hose, part number 3D0122101T. This hose is a vital component of the engine cooling system, responsible for transporting hot coolant between the engine and the radiator to dissipate heat. It features a quick release coupling for secure and efficient connection. The hose is positioned within the engine bay, connecting various cooling system components. Weighing approximately 0.311 kg, it measures 0.34m in length. Using a genuine OEM coolant hose ensures correct routing geometry, material resistance to heat and pressure, and reliable sealing to prevent leaks and maintain cooling system integrity.