FordPartsGiant.com offers the wholesale prices for genuine 2005 Ford Explorer Sport Trac parts. Parts like Battery and Mountings 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. Transmission: 5-Speed Automatic Transmission - 5R44E/5R55E, 5-Speed Manual Transmission - R1HD.