MoparPartsGiant.com offers the lowest prices for genuine 2018 Dodge Challenger parts. Parts like Suspension - Front 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 6.2L, 8 Cyl 6.4L. Transmission: 6-Speed Manual Transmission, 8-Speed Automatic Transmission.