Part #: 20399

Remy 20399 Alternator

Premium Remanufactured
⚙️ 7 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Premium Remanufactured
🚗Fitment: Cadillac, Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville
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Reliable Alternator for Cadillac Vehicles

The Remy Premium Remanufactured Alternator 20399 is designed to provide dependable electrical charging and starting performance for select Cadillac models. Engineered to meet OE specifications, this 12-volt alternator ensures consistent power delivery for your vehicle's electrical system.

  • Amperage Rating: 120 amps for efficient charging
  • External fan type for optimal cooling
  • Remanufactured to OE standards
  • Includes pulley for easy installation
  • Clockwise rotation direction
  • Internal voltage regulator for stable voltage output
  • Compatible with 12-volt electrical systems

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators that have been carefully rebuilt to meet or exceed original equipment manufacturer (OEM) specifications. This process includes thorough testing and replacement of worn components, ensuring reliable performance and longevity. The 20399 alternator benefits from this rigorous remanufacturing process, making it a practical choice for maintaining the electrical system of your Cadillac.

Detailed Product Description

This Remy alternator 20399 features a 120-amp output, suitable for vehicles requiring a robust charging system. The external fan design helps maintain optimal operating temperatures, reducing the risk of overheating during extended use. With an internal voltage regulator, this alternator maintains consistent voltage levels, protecting your vehicle's electrical components. The included pulley and clockwise rotation direction match the original equipment specifications, simplifying replacement on Cadillac Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville models.

Common Applications and Issues Addressed

  • Restores charging system functionality in Cadillac DeVille and Eldorado
  • Replaces failing alternators causing battery drain on Fleetwood models
  • Solves electrical system warning lights related to alternator faults
  • Addresses intermittent starting problems on Seville vehicles
  • Ensures stable voltage output for Commercial Chassis applications

Installation Notes and Tips

Installation of the Remy 20399 alternator should be performed by a qualified technician familiar with Cadillac electrical systems. Ensure the battery is disconnected before removal to prevent electrical shorts. Verify the clockwise rotation direction and pulley compatibility with your specific model. Proper torque specifications should be followed when securing the alternator to avoid damage.

Quality Assurance and Warranty

Remy Premium Remanufactured alternators undergo comprehensive testing to meet OE standards. Each unit is inspected for electrical performance and durability. While specific warranty details are not provided here, Remy products typically include a limited warranty covering defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.

BrandRemy
Part Number20399
PositionPremium Remanufactured
Amperage Rating120
Fan TypeExternal
New or RemanufacturedRemanufactured
OE ManufacturerDelco/Delphi
Pulley IncludedYes
Rotation DirectionClockwise
Voltage (V)12
Voltage Regulator TypeInternal

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1988CadillacCommercial Chassis4.5LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1988CadillacDeVille4.5LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1988CadillacEldorado4.5LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1988CadillacFleetwood4.5LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1988CadillacSeville4.5LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1987CadillacDeVille4.1LV8N/A120 Amps - 120 amp power output rating; Premium Remanufactured
1986CadillacDeVille4.1LV8N/A120 Amps - 120 amp power output rating; 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:

104630961046310811012961101518

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