FordPartsGiant.com offers the wholesale prices for genuine 2010 Ford Explorer Sport Trac parts. Parts like Gear Change-Automatic Transmission are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L. Transmission: 5-Speed Automatic Transmission 5R55S, 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60.