Genuine OEM Volkswagen Engine Coolant Hose Assembly, part number 5Q0121049CM. This complex hose assembly is crucial for the engine's cooling system, transporting coolant between various engine components to maintain optimal operating temperatures. It is installed within the engine bay, connecting parts of the cooling circuit. Weighing approximately 1.135 kg, this assembly features multiple branches and connection points. Choosing a genuine OEM hose ensures correct routing geometry, resistance to engine heat and pressure, and proper material composition for long-term leak-free performance.