Genuine OEM Audi Supply Line for Reduction Agent, part number 5N0131984C. This line delivers reduction agent, such as AdBlue, for the exhaust gas treatment system, crucial for reducing harmful emissions. Weighing 0.443 kg and measuring 0.36m in length, its specific material composition and routing geometry are vital for resisting corrosive agents and maintaining the integrity of the emissions control system, ensuring environmental compliance.