Genuine OEM Audi Coolant Hose, part number 2K0122157AH. This hose is a critical component of the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. It is part of a complex network of hoses within the engine bay. Measuring 0.339 meters in length, this hose weighs 0.247 kg. Using a genuine OEM coolant hose ensures the correct material composition for heat and pressure resistance, precise bends for proper routing, and durable connections to prevent leaks and maintain cooling efficiency.