High-Output Alternator Fits 1987 to 1990 XJ Cherokee;Fits 1987 to 1990 MJ Comanche;4.0L 6 cylinder engine JEEP CHEROKEE (XJ) BASE CHIEF LAREDO LIMITED PIONEER SPORT 1987 1988 1989 1990 4L (242) GAS Mean Green Mean Green High-Output Alternator (Natural) - 647902 647902 Alternators