High-Output Alternator Fits 1987 to 1990 YJ Wrangler;6 cylinder engine;140 amp JEEP WRANGLER (YJ) BASE ISLANDER LAREDO S SAHARA SPORT 1987 1988 1989 1990 4.2L (258) GAS Mean Green Mean Green High-Output Alternator (Natural) - MG7128 MG7128 Alternators