Genuine OEM Volkswagen SCR Reducing Agent Filler Pipe, part number 5Q0131966A. This pipe is specifically designed to facilitate the filling of the Selective Catalytic Reduction (SCR) reducing agent tank, which is essential for the vehicle's emissions control system. Measuring 0.98 meters in length, it ensures a secure and leak-free connection during refilling. Genuine OEM filler pipes are engineered for precise fitment and material compatibility, preventing spills and ensuring the integrity of the emissions system.