Genuine OEM Audi Reducing Agent Transfer Line, part number 80A131961H. This specialized line is a critical component of the vehicle's emissions control system, responsible for transporting reducing agent (such as AdBlue/DEF) to the exhaust stream. Its function is essential for the Selective Catalytic Reduction (SCR) process, which significantly reduces nitrogen oxide (NOx) emissions. This line is positioned in the front section of the vehicle's underbody, connecting various components of the exhaust and emissions system. Weighing approximately 0.6 kg, this genuine OEM line ensures precise routing, correct material composition for chemical resistance, and leak-free connections, which are vital for the proper functioning and longevity of the complex emissions system.

Catalogue entry: LEAD front.