Part #: 12783

Remy 12783 Alternator

Premium Remanufactured
⚙️ 4 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Premium Remanufactured
🚗Fitment: Cadillac, CTS
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Alternator for Cadillac CTS Vehicles

The Remy Premium Remanufactured Alternator 12783 is designed specifically for Cadillac CTS models, providing a dependable electrical charging solution. This remanufactured alternator offers a 150-amp output with an internal fan and voltage regulator, ensuring consistent performance for your vehicle's electrical system.

  • 150 Amperage Rating for efficient power supply
  • Internal fan type for optimized cooling
  • Remanufactured to meet OEM standards
  • Includes pulley for direct replacement
  • Clockwise rotation direction compatible with Cadillac CTS
  • 12 Volt system with internal voltage regulator
  • OE Manufacturer: Nippondenso
  • Superseded part number 12589 for updated fitment

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy focuses on restoring alternators to meet strict quality and performance standards. Each unit undergoes thorough testing and refurbishment to ensure reliability comparable to new parts. This line is ideal for Cadillac CTS owners seeking a cost-effective alternative without compromising on functionality or durability.

Product Details and Specifications

This Remy alternator, part number 12783, is engineered for the electrical, charging, and starting system of Cadillac CTS vehicles. It features a 150-amp output suitable for modern vehicle electrical demands. The internal fan design helps maintain optimal operating temperatures, while the internal voltage regulator ensures stable voltage output. The included pulley and clockwise rotation direction match the original equipment specifications from Nippondenso, the OE manufacturer. Note that this part supersedes the previous 12589 model, reflecting updated manufacturing improvements.

Common Applications and Issues Addressed

  • Replacement for failing or weak alternators in Cadillac CTS
  • Resolves battery charging problems and electrical system malfunctions
  • Addresses issues with dimming headlights or electrical accessories
  • Fixes warning lights related to charging system faults
  • Restores proper voltage regulation and power delivery

Installation Notes and Tips

Ensure compatibility with your Cadillac CTS by verifying the part number 12783 and rotation direction. The included pulley allows for direct replacement without additional parts. Proper torque specifications should be followed during installation to avoid damage. It is recommended to inspect the battery and electrical connections when replacing the alternator to ensure optimal system performance.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo comprehensive testing to meet OEM standards. This part is built to provide reliable performance consistent with original equipment. Warranty details are provided by Remy and typically cover defects in materials and workmanship, supporting confidence in your purchase.

BrandRemy
Part Number12783
PositionPremium Remanufactured
Amperage Rating150
Fan TypeInternal
New or RemanufacturedRemanufactured
OE ManufacturerNippondenso
Part StatusSuperseded to 12589
Pulley IncludedYes
Rotation DirectionClockwise
Voltage (V)12
Voltage Regulator TypeInternal

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007CadillacCTS6.0LV8N/A150 Amps; Superseded; Premium Remanufactured
2006CadillacCTS6.0LV8N/A150 Amps; Superseded; Premium Remanufactured
2005CadillacCTS5.7LV8N/A150 Amps; Superseded; Premium Remanufactured
2004CadillacCTS5.7LV8N/A150 Amps; Superseded; 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:

104210-3340104210-43802575093525766345

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