Remy 12104 Alternator

Remanufactured Alternator for Jeep TJ and Wrangler

The Remy 12104 is a premium remanufactured alternator built for 1999-2000 Jeep TJ and Jeep Wrangler standard applications. It delivers 81 amps at 12 volts and uses an external voltage regulator, making it a direct-fit charging system replacement for the specified vehicles.

Key Features

• Remy Premium Remanufactured alternator
• Part number 12104
• 81 amp amperage rating
• 12-volt electrical system
• Internal fan design
• Clockwise rotation
• Pulley included
• OE manufacturer reference: Nippondenso
• External voltage regulator type

Product Line Details

Remy Premium Remanufactured parts are built for drivers who need a replacement charging component with OE-style fit and electrical specifications. This alternator is remanufactured rather than new, and it is configured to match the listed Jeep TJ and Wrangler applications with the correct rotation, pulley, and regulator type.

Detailed Description

Use the Remy 12104 when replacing a worn or failing alternator on a 1999-2000 Jeep TJ or 1999-2000 Jeep Wrangler with the standard 81 amp setup. This alternator is designed around the original Nippondenso-style application and supports stable charging performance for the vehicle’s electrical system. If you are searching for a 1999 Jeep Wrangler alternator, a 2000 Jeep TJ alternator, or a Remy 12104 charging replacement, this unit matches the confirmed fitment listed here.

This part cross-references 121000-3610 and 56005684AB for the same application.

Common Problems This Part Can Address

• Battery warning light caused by alternator output loss
• Low charging voltage at idle or while driving
• Dim headlights or unstable electrical performance
• Battery drain after the engine is running
• Charging system failure from a worn internal component

Installation Notes and Tips

Verify the vehicle uses the standard 81 amp configuration before installation. Confirm pulley alignment, belt condition, and electrical connector condition during replacement. Because this unit uses an external voltage regulator, inspect the regulator circuit and related wiring as part of the charging system diagnosis. For best results, test battery condition and charging voltage after installation on your Jeep TJ or Jeep Wrangler.

Quality Assurance

This Remy Premium Remanufactured alternator is remanufactured to meet the listed OE-style application requirements for the specified Jeep models. It is identified by part number 12104 and built for the confirmed 1999-2000 Jeep TJ and Wrangler fitment.