Remy 12857 Alternator

Remanufactured Alternator for Chrysler and Dodge

The Remy 12857 is a premium remanufactured 12-volt alternator built for Chrysler and Dodge applications that require a 160-amp charging output. It features an internal fan, clockwise rotation, an included pulley, and an external voltage regulator type for the listed vehicles.

Remy Premium Remanufactured parts are rebuilt to restore charging-system performance for OE-style replacement needs. This alternator cross-references 4896805AD and 4896805AE for the same application.

Key Features

• 160 amp amperage rating for charging-system output
• 12-volt alternator with clockwise rotation
• Internal fan design
• Pulley included
• External voltage regulator type
• Remanufactured unit from Remy Premium Remanufactured
• OE manufacturer reference: Nippondenso
• Part number: 12857

Fitment Details

• Fits 2012-2013 Dodge Charger, N/A — Standard alternator; rated at 160 Amps; Premium Remanufactured
• Fits 2012 Chrysler 300, N/A — Standard alternator; rated at 160 Amps; Premium Remanufactured
• Fits 2008-2010 Chrysler 300, N/A — 160 Amps; verify compatibility for model-year application; Premium Remanufactured
• Fits 2009-2010 Chrysler 300, N/A — 160 Amps, optional; Premium Remanufactured
• Fits 2008-2010 Dodge Challenger, N/A — 160 Amps; verify compatibility for model-year application; Premium Remanufactured
• Fits 2008-2010 Dodge Charger, N/A — 160 Amps; verify compatibility for model-year application; Premium Remanufactured
• Fits 2009-2010 Dodge Charger, N/A — 160 Amps, optional; Premium Remanufactured
• Fits 2008 Dodge Magnum, N/A — 160 Amps; verify compatibility for model-year application; Premium Remanufactured

What It Helps Address

• Low charging output from a worn alternator
• Battery warning lights caused by charging-system faults
• Dim lights or electrical instability at idle
• Accessory performance issues from insufficient system voltage
• Starting problems related to weak charging performance

Installation Notes

Confirm the vehicle’s alternator specification, amperage rating, and regulator setup before installation. Verify pulley configuration, rotation direction, and OE-style mounting points against the removed unit. For 2008-2010 Chrysler 300, Dodge Challenger, Dodge Charger, and Dodge Magnum applications, review the notes carefully because some listings are optional or require fitment verification by model year.

Quality Assurance

This Remy Premium Remanufactured alternator is remanufactured to OE-based specifications for the listed Chrysler and Dodge applications. The OE manufacturer reference is Nippondenso, and the part number 12857 is listed with direct interchange support for common OE references.