MoparPartsGiant.com offers the wholesale prices for genuine 2013 Ram 1500 parts. Parts like Engine Cylinder Block And Hardware are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.6L, 8 Cyl 4.7L, 8 Cyl 5.7L. Transmission: 6-Speed Automatic Transmission, 8-Speed Automatic Transmission.