MoparPartsGiant.com offers the wholesale prices for genuine 2005 Chrysler Pacifica parts. Parts like Plumbing - Heater are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.5L, 6 Cyl 3.8L. Transmission: 4-Speed Automatic Transmission.