Remy 12934 Alternator

Remanufactured Alternator for Ford E-Series

Remy Premium Remanufactured alternator Part Number 12934 is a 12-volt charging system component built for Ford E-Series vans and related applications. It delivers 120 amps of output, uses an internal voltage regulator, and includes the pulley for a direct replacement setup.

The Premium Remanufactured line focuses on OE-style replacement coverage with remanufactured units built to match the original Mitsubishi design used in these Ford applications. This alternator is a practical choice for restoring stable charging performance on Ford E-150, E-250, and E-350 Super Duty models.

• 120 amp amperage rating for standard charging-system replacement
• 12 volt alternator with internal voltage regulator
• Internal fan design
• Pulley included
• Clockwise rotation
• Remanufactured unit
• OE manufacturer: Mitsubishi

Fitment Details

• Fits 2021 Ford E-350 Super Duty, N/A — 120 amps; Premium Remanufactured
• Fits 2017-2019 Ford E-350 Super Duty, N/A — 120 amps; Premium Remanufactured
• Fits 2009-2016 Ford E-350 Super Duty, N/A — Mitsubishi unit; 120 amps; Premium Remanufactured
• Fits 2009-2014 Ford E-150, N/A — Mitsubishi unit; 120 amps; Premium Remanufactured
• Fits 2009-2014 Ford E-250, N/A — Mitsubishi unit; 120 amps; Premium Remanufactured

This part cross-references Ford service numbers 9C2T-10300-DA and 9C2Z-10346-B for the same application.

Common Replacement Uses

• Replacing a worn alternator that no longer maintains proper charging voltage
• Addressing battery warning lights caused by charging-system output loss
• Correcting dim lights or electrical instability at idle and under load
• Restoring charging performance after bearing, regulator, or internal component wear
• Servicing Mitsubishi-based Ford E-Series charging systems with the correct output rating

Installation Notes

Verify pulley alignment, connector style, and mounting points against the original unit before installation. Confirm the vehicle uses a clockwise-rotation, 12-volt alternator with an internal regulator and 120 amp output rating. For Ford E-150, E-250, and E-350 Super Duty applications, match the original Mitsubishi-style configuration and inspect the belt condition during replacement.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to OE-style specifications for the listed Ford applications. Part Number 12934 is built as a replacement alternator for vehicles originally equipped with a Mitsubishi unit.