Remy 12666 Alternator

Remanufactured Alternator for Chrysler and Dodge

This Remy Premium Remanufactured alternator is built for 12-volt charging systems that need a direct-fit replacement with OE-style specifications. It delivers 140 amps, uses an internal fan, and includes the pulley for applications that match the original Nippondenso design.

Compatible with 2005-2007 Chrysler 300, 2006-2007 Dodge Charger, and 2005-2007 Dodge Magnum, this Remy 12666 alternator supports standard charging-system service on the vehicles listed below.

Key Features

• 140 amp amperage rating for factory-style charging output
• Remanufactured unit from Remy Premium Remanufactured
• OE manufacturer reference: Nippondenso
• 12-volt electrical system application
• Internal fan design
• Pulley included
• Clockwise rotation
• External voltage regulator type

Product Details

Remy part number 12666 is a remanufactured alternator intended for Chrysler 300, Dodge Charger, and Dodge Magnum applications that use a Nippondenso-style charging system. The 140 amp output, clockwise rotation, internal fan, and external voltage regulator configuration are important details for matching the original electrical setup. This part cross-references Nippondenso 421000-0251 and 421000-0252 for the same application.

Common Issues This Part Can Address

• Battery warning light caused by low alternator output
• Weak charging performance at idle or under electrical load
• Dim headlights or unstable accessory operation
• Charging-system failure from a worn original alternator
• Voltage irregularities in standard 12-volt systems

Installation Notes and Tips

Verify pulley alignment, rotation direction, and regulator type before installation. Confirm the vehicle uses the listed 140 amp standard configuration and compare the original unit to Remy 12666 for connector and mounting match. After installation, check charging voltage at the battery and inspect belt condition, tension, and cable connections.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to restore core function for replacement use. This alternator is built to match the listed OE-style application details for Chrysler and Dodge charging-system service.