FordPartsGiant.com offers the wholesale prices for genuine 2005 Ford F-550 Super Duty parts. Parts like Manual Transmission and Case are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 10 Cyl 6.8L EFI, 8 Cyl 5.4L, 8 Cyl 6.0L Diesel OHV. Transmission: 5-Speed Automatic Transmission 5R110W - HI/Torque, 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Manual Transmission M6HD-W, 6-Speed Manual Transmission Z/F S6-650.