MoparPartsGiant.com offers the wholesale prices for genuine 2002 Jeep Grand Cherokee parts. Parts like Input Shaft are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.0L, 8 Cyl 4.7L. Transmission: 4-Speed Automatic Transmission, 5-Speed Automatic Transmission.