1990 Ford F-250 Replacement Fuel Filters – CARiD Ford F-250 7 1990, Fuel Filter by Motorcraft®. Motorcraft Fuel Filters must also withstand harsh performance testing through a series of test-to-failure endurance and materials durability tests to ensure their long lasting quality.. 1990 Ford F-250 Replacement Fuel System Parts - CARiD Ford F-250 7 1990, Spin-On Fuel Diesel Filter/Water Separator by FRAM®. Spin-on. Fuel filter is vital for any vehicle as it keeps the engine clean from contaminants. Modern autos are equipped with fuel injected engines where openings..