MoparPartsGiant.com offers the wholesale prices for genuine 2019 Ram 3500 Pickup parts. Parts like Front Axle Shafts are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 6.7L Diesel, 8 Cyl 6.4L. Transmission: 6-Speed Automatic Transmission, 8-Speed Automatic Transmission.