This is an 85A Mitsubishi Alternator for Montero. This Unit Looks a Little Like the 13351 / 13352 Used on Other Mitsubishi Vehicles, Although the Rear Bottom Mount on This Unit Has a Threaded Bushing in the Mounting Hole, and the Unit is Slightly Smaller and More Narrow Than the 13351 / 13352. There are Two Versions of This Unit. The A3TA0791 Has a Rectifier With a Conventional Diode Trio, While the A3TA0791A Uses a Rectifier Without a Diode Trio. It is Critical to Match the Correct Regulator With the Type of Rectifier Used. The 13615 is the 90A Version, While the 13786 is the 100A. Both Will Work in Place of This Unit, if Desired. There Seems to Be a Common Problem With an Oil Leak in the Vehicle (1994-98 - Maybe Later Also) That Causes Premature Failure of the Alternator. It May Come From a Power Steering Hose.