Genuine OEM Audi Rear Coolant Hose, part number 8R0121081AD. This flexible hose is designed to carry coolant efficiently to and from various components within the engine cooling system, specifically at the rear. It plays a vital role in regulating engine temperature. Weighing approximately 0.023 kg, this genuine OEM coolant hose provides precise routing and durable construction, ensuring leak-free performance and optimal engine cooling.