Genuine OEM Audi Engine Coolant Hose, part number 1EA121157K. This complex, multi-branched hose assembly is designed to transport coolant efficiently between various engine components, playing a vital role in the vehicle's thermal management system. Weighing approximately 0.601 kg and measuring 0.47 meters in length, it features specific bends and connection points for precise routing. Choosing a genuine OEM coolant hose ensures the correct rubber compound for heat and pressure resistance, preventing leaks and maintaining optimal engine operating temperatures.