Genuine OEM Volkswagen Coolant Hose, part number 5N0122051AB. This hose is designed to transfer coolant efficiently between various engine components, playing a critical role in maintaining optimal engine operating temperature. It connects directly to the radiator as part of the engine cooling system. Weighing 0.47 kg and measuring 0.7 meters in length, this hose is engineered for precise fitment and durability. Choosing a genuine OEM coolant hose ensures correct routing geometry, material resistance to heat and pressure, and reliable, leak-free performance, preventing potential engine damage from overheating.