Genuine OEM Audi Water Coolant Hose, part number 2Q0122101BF. This hose is designed to transport coolant within the engine cooling system, playing a critical role in maintaining optimal engine operating temperatures. It is a molded rubber hose, featuring specific bends and connection points for precise routing. Weighing 0.461 kg and measuring approximately 0.51 m in length, this hose is constructed from high-quality, heat-resistant rubber. Choosing a genuine OEM coolant hose ensures exact fitment, correct fluid resistance, and long-term durability against thermal cycling and pressure, preventing leaks and maintaining the integrity of the cooling system.