The SPECTRA PREMIUM INDUSTRIES, INC. FN781 Fuel Tank Filler Neck is engineered to provide a precise fit and reliable performance for your vehicle's fuel system. Designed with a length of 19 inches and a diameter of 1.5 inches, this filler neck features a Quick-On cup type for efficient fuel delivery. Constructed from durable steel, it ensures long-lasting service under various operating conditions. The FN781 is compatible with diesel fuel types, making it suitable for a range of diesel-powered vehicles. Its single vent design with a 0.75-inch inside diameter facilitates proper ventilation, enhancing fuel system efficiency. The unit is dual-coated to offer enhanced corrosion protection, extending its service life and maintaining optimal performance. Additionally, it undergoes leak testing after production to ensure it is free from fuel and evaporative leaks, providing peace of mind and reliability. The FN781 is fit-tested on the specific vehicle application for which it was developed, verifying that the design fits properly and can be easily installed. This meticulous testing process ensures a straightforward installation, reducing downtime and labor costs. The unit is also tested with the original equipment (OE) fuel cap to prevent evaporative emission and check engine light failure, ensuring compliance with emission standards and maintaining vehicle performance. By choosing the SPECTRA PREMIUM INDUSTRIES, INC. FN781 Fuel Tank Filler Neck, you are investing in a high-quality component that addresses common operational challenges such as fuel system leaks, corrosion, and installation difficulties. Its durable construction, precise fit, and comprehensive testing make it a valuable addition to your fleet, contributing to the overall efficiency and reliability of your vehicles.