FordPartsGiant.com offers the wholesale prices for genuine 2011 Ford F-450 Super Duty parts. Parts like Front Suspension Struts and Springs 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: 5-Speed Automatic Transmission 5R110W NAAO, 5-Speed Manual Transmission-Tremec TR4050, 6-Speed Automatic Transmission (6R140).