MoparPartsGiant.com offers the wholesale prices for genuine 2007 Jeep Commander parts. Parts like Rear Disc Parking Brake Assembly are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.7L, 8 Cyl 4.7L, 8 Cyl 5.7L. Transmission: 5-Speed Automatic Transmission.