The FN782 Fuel Tank Filler Neck is an essential tool for any Ford F350, F450, or F550 Super Duty owner from 2005 to 2007, specifically designed for diesel vehicles. This fuel tank filler neck operates seamlessly with the OE #577-306 stock tube, ensuring a perfect fit and easy fuel transfers. Its ergonomic design, made of high-quality, corrosion-resistant material, ensures secure and comfortable handling. The FN782 Fuel Tank Filler Neck also features a built-in drain valve, preventing fuel overflow and making it easier to maintain your vehicle's fuel system. This reliable and efficient product is not only aesthetically pleasing but also ensures the security and longevity of your diesel Ford Super Duty vehicle.