MoparPartsGiant.com offers the wholesale prices for genuine 2008 Dodge Grand Caravan parts. Parts like Sliding Door Trim Panels are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.3L, 6 Cyl 3.8L, 6 Cyl 4.0L. Transmission: 4-Speed Automatic Transmission, 6-Speed Automatic Transmission.