Genuine OEM Audi Transfer Line for Reducing Agent, part number 8W0131961. This component is an integral part of the vehicle's selective catalytic reduction (SCR) system, responsible for transferring reducing agent fluid within the emissions system. As shown in the diagram, it is a specific segment of the overall reducing agent line assembly. Weighing approximately 0.231 kg, this line is designed for durability. Choosing a genuine OEM transfer line ensures the correct material composition for chemical compatibility and precise routing, which is essential for preventing leaks and maintaining the efficiency of the emissions control system.