The Spectra Premium Industries, Inc. FN778 Fuel Tank Filler Neck is a high-quality replacement component engineered to meet or exceed original equipment specifications. Designed for seamless integration into various vehicle models, this filler neck ensures efficient fuel delivery and minimizes the risk of fuel leaks, thereby enhancing operational reliability and safety. Constructed from durable steel, it offers superior resistance to corrosion, extending the service life of the fuel system. The FN778 features a quick-on cup type with a diameter of 1-5/16 inches and a length of 9 inches, facilitating straightforward installation without the need for vehicle modifications. Its single vent with a 5/16-inch inside diameter effectively manages fuel vapors, contributing to optimal engine performance. This filler neck is compatible with gasoline fuel types, making it suitable for a wide range of vehicles. By choosing the FN778, fleet operators can ensure consistent fuel system performance, reduce maintenance costs, and maintain vehicle uptime, all of which are critical for efficient fleet operations.