Genuine OEM Audi Engine Coolant Pipe with Hose, part number 0P2121481B. This assembly is a vital part of the engine cooling system, responsible for transporting coolant between various engine components and the radiator. Its combination of rigid piping and flexible hose sections ensures proper routing and vibration absorption. Weighing 0.769 kg, the genuine OEM pipe and hose assembly guarantees precise fitment, leak-free connections, and resistance to temperature extremes and corrosive coolants, which are crucial for preventing engine overheating.