Genuine OEM Audi Coolant Hose, part number 1K0121086AL. This hose is designed to transport coolant efficiently throughout the engine cooling system, playing a critical role in regulating engine temperature. It connects components within the cooling circuit, ensuring proper fluid flow to a heat exchanger. Weighing 0.241 kg and measuring 0.41 meters in length, it is engineered for specific routing. Choosing a genuine OEM coolant hose ensures the correct material composition, pressure resistance, and exact routing geometry for a leak-free and reliable cooling system.