Genuine OEM Volkswagen Reducing Agent Supply Line, part number 5Q0131327G. This line is crucial for delivering reducing agent, such as AdBlue, to the exhaust system, facilitating the Selective Catalytic Reduction (SCR) process. It is integrated within the exhaust aftertreatment system. Weighing 0.063 kg and measuring approximately 25.4 cm in length, this component is designed for precise fitment and chemical resistance. Using a genuine OEM supply line ensures the correct flow rate and prevents leaks, maintaining the integrity and efficiency of the vehicle's emissions control system.