MoparPartsGiant.com offers the wholesale prices for genuine 2003 Dodge Ram Van parts. Parts like Plumbing - A/C Condenser & Drier are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.9L, 8 Cyl 5.2L, 8 Cyl 5.9L. Transmission: 3-Speed Automatic Transmission, 4-Speed Automatic Transmission.