Manufacturer Part Number: 6.7 Powerstroke Fuel Filter FD4625. OEM Part Number: FD-4624 FD-4625, FD4624 FD4625, HC3Z-9N184-B HC3Z-9N184-C, HC3Z9N184B HC3Z9N184C. For optimal performance, the fuel filter in your car should be replaced at regular intervals.