The product is an OEM 6.7L Cummins DEF Urea Filler Tube Assembly specifically designed for RAM 2500 and 3500 trucks made between 2013 and 2024. This filler tube is essential for injecting DEF (Diesel Exhaust Fluid) into the truck's exhaust system to reduce emissions and meet environmental regulations. Made by the original manufacturer, this assembly ensures a perfect fit and reliable performance for your vehicle.