Genuine OEM Volkswagen Coolant Hose, part number 2Q0122109B. This molded rubber hose is a vital component of the engine cooling system, responsible for circulating coolant between the engine, radiator, and other cooling system elements to maintain optimal operating temperatures. It is positioned within the engine bay, following specific routing paths. Weighing 0.626 kg and measuring approximately 50 cm in length, this hose is designed for precise fitment. Choosing a genuine OEM coolant hose ensures the correct material composition, resistance to heat and pressure, and exact routing geometry, which are critical for preventing leaks and maintaining cooling system efficiency and longevity.