Remy 12780 Alternator

Remanufactured Alternator for GM V6 Charging Systems

Remy Premium Remanufactured alternator Part Number 12780 is a 12-volt, 150-amp charging unit built for select Chevrolet applications with a Nippondenso OE design. It includes an internal voltage regulator, internal fan, and pulley, making it a direct replacement option for vehicles that need stable charging output and OE-style fitment.

Compatible With 2006 Chevrolet Impala, 2006 Chevrolet Monte Carlo, and 2009-2011 Chevrolet Impala. This Remy alternator 12780 is built for clockwise rotation and is intended for vehicles using the NDenso unit configuration.

Key Features

• Remanufactured alternator from Remy Premium Remanufactured
• 150-amp amperage rating for factory-style electrical output
• 12-volt system compatibility
• Internal voltage regulator for integrated control
• Internal fan design for alternator cooling
• Pulley included for OE-style replacement
• Clockwise rotation
• OE manufacturer reference: Nippondenso

Product Details

Remy 12780 is a remanufactured alternator engineered around the Nippondenso unit used in select Chevrolet Impala and Chevrolet Monte Carlo applications. The Premium Remanufactured line focuses on OE-style replacement parts for charging-system service, and this unit is specified at 150 amps to support the vehicle’s electrical demands. If you are replacing a worn charging component on a 2006-2011 Chevrolet Impala or a 2006 Chevrolet Monte Carlo, this alternator provides the correct configuration for the listed applications.

This part cross-references 104210-4560 and 10335498 for the same application.

What It Helps Fix

• Battery warning light caused by alternator output loss
• Low charging voltage at idle or under load
• Dim lights or unstable electrical performance
• Battery drain from a failing charging system
• Noise or charging irregularities from a worn alternator

Installation Notes and Tips

Verify the vehicle uses the Nippondenso-style alternator configuration before installation. Confirm pulley alignment, connector fit, and clockwise rotation against the original unit. After installation, check charging voltage at the battery and inspect belt condition, tension, and electrical connections to confirm proper system operation.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to restore charging-system function for OE-style replacement service. Part Number 12780 is built to match the listed application requirements for select Chevrolet Impala and Chevrolet Monte Carlo models.