Genuine OEM Volkswagen Engine Coolant Hose, part number 3AA122051E. This flexible hose is an integral part of the engine cooling system, responsible for carrying coolant between various engine components. It is located within the engine bay, connecting parts of the cooling circuit. Weighing approximately 0.82 kg, this hose is designed for specific routing and pressure. Choosing a genuine OEM coolant hose ensures correct routing geometry, resistance to high temperatures and pressures, and compatibility with coolant fluids, preventing leaks and maintaining cooling system integrity.