MoparPartsGiant.com offers the wholesale prices for genuine 2003 Dodge Durango parts. Parts like Radiator & Related Parts are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 4.7L, 8 Cyl 5.9L. Transmission: 4-Speed Automatic Transmission, 5-Speed Automatic Transmission.