FordPartsGiant.com offers the wholesale prices for genuine 2004 Ford Freestar parts. Parts like Engine Modules and Sensors are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.9L OHV EFI NA, 6 Cyl 4.2L OHV EFI. Transmission: 4AT AX4N.