MoparPartsGiant.com offers the wholesale prices for genuine 2017 Jeep Grand Cherokee parts. Parts like Interior Trim, Seating, Instrument Panel And Floor Console are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L Diesel, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.4L. Transmission: 8-Speed Automatic Transmission.