Powerstroke 6.4L F250 & F350 Trucks. Desmoparts stocks Racor filters for the Ford Powerstroke 6.4L series trucks. Racor is the OEM for fuel and oil filters for Ford trucks. Racor is manufactured here in the USA. It’s the same filter you’d find in a Motorcraft box. Replaces Ford 8C3Z-9N184-A & Motorcraft FD4609. The PFF4617 is the new fuel filter replacing the old Racor part number PFF5550. This is the real OEM filter only in a plain brown box. If you can do without a fancy Motorcraft box this we can save you some money.