Genuine OEM Audi Coolant Hose, part number 03L122157M. This essential component is responsible for carrying coolant between various engine components, facilitating heat transfer and maintaining optimal engine operating temperatures. It is typically routed through the engine bay, connecting the radiator, engine block, and other cooling system parts. Weighing 0.679 kg, it measures 0.49m in length, 0.32m in width, and 0.17m in height. Opting for a genuine OEM coolant hose guarantees correct routing, superior material resistance to heat and chemicals, and precise connection points to prevent leaks and ensure efficient cooling system operation.