Mean Green MG7128 Alternator for 87-90 Jeep Wrangler YJ with 4.2L Engine with V-Belt

If you're enjoying your favorite tunes at full volume on a serious sound system in your Jeep, lighting a trail with a row of auxiliary lights or winching yourself to safety, the Mean Green High Output Alternator can eliminate accessory failure and battery trouble. With stock alternator rated at 40-60 amps, the Mean Green Alternator cranks out 140 amps to provide clean, reliable power through the state of the art internal voltage regulator designed to protect vehicle wiring and ignition systems. Specially designed random pitch fan is extra quiet. High-speed precision balanced for smooth operation. Sever duty copper stator windings and heavy-duty oversized front and rear bearings provide long life and trouble free service. All aluminum castings have been redesigned for Jeep applications and are lightweight and compact. A must for those with dual battery systems or those who just want piece of mind. Easy installation requires no modifications.