More Torque, More Power, Quicker Starts Fits Models AMC models include: Ambassador, American, AMX, Gremlin, Hornet, Javelin, Pacer, Matador, Rebel, Marlin Jeep models include: CJ, Cherokee, DJ, Jeepster, J series P/U, Wagoneer Fits Engines Engine CID: 232, 258, 290, 304, 343, 360 ( in some cases need use a 9 thooh drive), 390, 401 Fits: POSTAL JEEPS W/I-6 AMC AMX, JAVELIN, REBEL 1968-1980 4.2L,4.8L,5.0L,5.6L,5.9L,6.4L,6.6L AMC CONCORD 1978-1983 2.5L,3.8L,4.2L AND 5.0L AMC EAGLE 1980-1987 4.2L AMC MATADOR AND PACER 1978-1980 3.8L,4.2L,5.0L,5.9L,6.6L AMC SPIRIT 1978-19793.8L,4.2L AND 5.0L AMC MARLIN 1967 4.8 AND 66-77 5.6L JEEP CHEROKEE 1974-1983 4.2L,5.9L AND 6.6L JEEP CJ 1972-1985 3.8L,4.2L,5.0L This starter works on the planetary reduction system,this means that the power provided by three pinions which central axisgiving a torke 4 times more than the original starter of the vehicle.This starter requires very little maintenance because the force exerted on the planetary system and not at the top of the boot.We include in the purchase of an flanche , which is placed if when the starter starts running, it emits an unpleasant sound, you use the flanche.wai