MoparPartsGiant.com offers the wholesale prices for genuine 2018 Jeep Cherokee parts. Parts like Spark Plugs, Ignition Coil are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.4L, 6 Cyl 3.2L. Transmission: 9-Speed Automatic Transmission.