The Spectra Premium Industries, Inc. FN1129 Fuel Tank Filler Neck is engineered to provide a precise fit for the 2009 Ford Flex, ensuring seamless integration into the vehicle's fuel system. This component is meticulously designed to meet or exceed original equipment (OE) specifications, leveraging Spectra Premium's extensive expertise in fuel system design. The FN1129 is dual-coated to enhance corrosion resistance, thereby extending the service life of the vehicle's fuel system. Each unit undergoes rigorous leak testing post-production to confirm the absence of fuel and evaporative leaks, ensuring safety and reliability. Additionally, the filler neck is tested with the OE fuel cap to prevent evaporative emission issues and check engine light failures, addressing common operational challenges in fuel delivery systems. By incorporating this high-quality filler neck, fleet operators can expect improved fuel system performance and reduced maintenance costs, contributing to the overall efficiency and longevity of their vehicle fleet.