MoparPartsGiant.com offers the wholesale prices for genuine 2014 Ram ProMaster 2500 parts. Parts like Charge Air Cooler are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 3.0L Diesel, 6 Cyl 3.6L. Transmission: 6-Speed Automatic Transmission.