HomeRemy 12457 Alternator
Part #: 12457

Remy 12457 Alternator

Premium Remanufactured
2 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Premium Remanufactured
Fitment: Toyota, Tundra
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Reliable Alternator for Toyota Tundra Vehicles

The Remy Premium Remanufactured Alternator 12457 is designed specifically for Toyota Tundra models, providing dependable electrical charging and starting performance. This 12-volt alternator features an 80-amp rating and includes an internal fan and voltage regulator to ensure consistent operation.

  • Amperage Rating: 80 amps for stable electrical output
  • Fan Type: Internal fan for efficient cooling
  • Voltage: 12 volts compatible with Toyota Tundra electrical systems
  • Rotation Direction: Clockwise rotation matching OEM specifications
  • Pulley Included: Comes with pulley for direct replacement
  • Voltage Regulator Type: Internal regulator for simplified installation
  • OE Manufacturer: Nippondenso remanufactured to meet original standards

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators rebuilt to meet strict quality and performance standards. Each unit undergoes comprehensive testing and refurbishment to restore functionality comparable to new parts. This ensures that the Remy 12457 alternator delivers reliable performance for Toyota Tundra vehicles while providing a cost-effective alternative to new components.

Product Details and Specifications

This Remy alternator 12457 is engineered to replace the original Nippondenso alternator found in Toyota Tundra models. Its internal fan design helps maintain optimal operating temperatures, while the internal voltage regulator simplifies installation by eliminating the need for external components. The clockwise rotation and included pulley ensure compatibility with the vehicle’s existing drive system. Rated at 80 amps and 12 volts, this alternator supports the electrical demands of the Toyota Tundra’s charging system.

Common Issues Addressed by This Alternator

  • Battery not charging properly or draining quickly
  • Dim or flickering headlights and electrical accessories
  • Warning lights related to charging system on the dashboard
  • Unusual noises from the alternator area
  • Vehicle stalling or difficulty starting due to electrical failure

Installation Notes and Tips

Installation of the Remy Premium Remanufactured Alternator 12457 should be performed by a qualified technician familiar with Toyota Tundra vehicles. Ensure the battery is disconnected before removal and installation to prevent electrical shorts. Verify the clockwise rotation and pulley alignment during installation to maintain proper belt tension and function. The internal voltage regulator reduces wiring complexity, but all connections should be checked for corrosion or damage.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo rigorous testing to meet OEM performance standards. This part is remanufactured using original Nippondenso components to ensure durability and reliability. While specific warranty details may vary, Remy typically offers coverage against defects in materials and workmanship to provide confidence in the product’s quality.

BrandRemy
Part Number12457
PositionPremium Remanufactured
Amperage Rating80
Fan TypeInternal
New or RemanufacturedRemanufactured
OE ManufacturerNippondenso
Pulley IncludedYes
Rotation DirectionClockwise
Voltage (V)12
Voltage Regulator TypeInternal

This part fits 2 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004ToyotaTundra3.4LV6N/A80 Amp Alternator; Premium Remanufactured
2003ToyotaTundra3.4LV6N/A80 Amp Alternator; Premium Remanufactured

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

104210-800027060-62240

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.