Genuine OEM Audi Engine Coolant Hose, part number 8W0121086D. This essential component is designed to transport engine coolant between various parts of the cooling system, maintaining optimal engine operating temperatures. It is located within the engine cooling assembly, connecting to a radiator. Weighing 0.051 kg, this hose is engineered for specific routing and connection points. Choosing a genuine OEM coolant hose guarantees the correct material composition for heat and pressure resistance, precise internal diameter for proper flow, and exact molded shape for leak-free connections, preventing overheating and system failures.