MoparPartsGiant.com offers the wholesale prices for genuine 2012 Dodge Challenger parts. Parts like Rear Wheelhouse Shields 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 5.7L, 8 Cyl 6.4L. Transmission: 5-Speed Automatic Transmission, 6-Speed Manual Transmission.