Genuine OEM Volkswagen Coolant Hose, part number 057121103J. This essential component is part of the engine cooling system, responsible for carrying coolant between various engine components to regulate temperature. It is a small, curved hose connecting two larger pipes. Weighing 0.022 kg and measuring 0.08m in length, this hose is manufactured from durable, heat-resistant materials to exact factory specifications. Choosing a genuine OEM coolant hose ensures correct routing geometry, optimal fluid resistance, and long-term leak-free performance, critical for engine longevity.