MoparPartsGiant.com offers the wholesale prices for genuine 2007 Jeep Grand Cherokee parts. Parts like Timing Chain , Timing Cover And Related Parts 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 3.7L, 8 Cyl 4.7L, 8 Cyl 5.7L, 8 Cyl 6.1L. Transmission: 5-Speed Automatic Transmission.