Genuine OEM Volkswagen Reduction Agent Fuel Tank Hose, part number 2E0201903B. This hose is specifically designed to transport reduction agent, such as AdBlue or Diesel Exhaust Fluid (DEF), to the fuel tank system. It plays a crucial role in the vehicle's emissions control system. Weighing 0.0438 kg, this hose is engineered for chemical resistance and precise routing. Choosing genuine OEM ensures the correct material composition and robust connections, critical for preventing leaks and maintaining the integrity of the emissions reduction system.