Genuine OEM Audi Coolant Hose, part number 06K121059K. This critical component is responsible for circulating coolant throughout the engine cooling system, ensuring proper temperature regulation and preventing overheating. It connects the radiator to other cooling circuit components. Constructed from durable, heat-resistant rubber, this hose weighs 0.1563 kg and measures 0.49 meters in length. Using a genuine OEM coolant hose guarantees the correct routing geometry, material integrity, and resistance to high temperatures and pressures for reliable engine cooling.