FordPartsGiant.com offers the wholesale prices for genuine 2018 Ford F-250 Super Duty parts. Parts like Forward Clutch and Components 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 6.2L OHC NA, 8 Cyl 6.7L Diesel T/C. Transmission: 6-Speed Automatic Transmission (6R100), 6-Speed Automatic Transmission (6R140).