Genuine OEM Volkswagen Engine Coolant Hose, part number 7N0121156AG. This flexible hose is an integral part of the engine cooling system, responsible for transporting coolant between various components and potentially preventing backflow. It ensures efficient heat exchange and helps maintain the engine's optimal operating temperature. Weighing 0.55 kg and measuring 0.52 m in length, this genuine OEM part guarantees correct routing, resistance to high temperatures and pressures, and a leak-free connection for reliable cooling system function.