MoparPartsGiant.com offers the wholesale prices for genuine 2010 Dodge Ram 1500 parts. Parts like Power Steering Reservoir are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.7L, 8 Cyl 4.7L, 8 Cyl 5.7L. Transmission: 4-Speed Automatic Transmission, 5-Speed Automatic Transmission, Automatic Transmission.