Replace your missing or damaged fuel cap with this OEM Genuine Fuel Tank Flex Fuel Filler Neck Cap for 2020–2025 Ford F-250 and F-350 Super Duty trucks, part number LC3Z-9030-N. Designed specifically for models equipped with Flex Fuel (E85) capability, this cap ensures a secure seal, helping maintain proper fuel system pressure and preventing contaminants from entering the tank. Built to Ford's exact standards, this factory-original cap is a direct replacement with a precise fit and durable construction. Easy to install and essential for emissions performance, it's the reliable choice to keep your Super Duty running right.