OE Quality
60-Day Returns

Remy 21759 Alternator
Reliable Alternator for Buick, Chevrolet, and Pontiac Vehicles
The Remy Premium Remanufactured Alternator 21759 is designed to restore charging system performance in select Buick, Chevrolet, and Pontiac models. Engineered with a 110-amp rating and internal voltage regulator, this alternator supports consistent electrical output for your vehicle's needs.
- 110 Ampere output for stable electrical supply
- Internal fan type for efficient cooling
- Remanufactured to meet OE standards
- Includes pulley for direct replacement
- Clockwise rotation direction
- 12 Volt system compatibility
- Internal voltage regulator for simplified installation
- Superseded part number 21756 for updated fitment
- OE Manufacturer: Delco/Delphi
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 specifications. This process includes thorough testing and replacement of worn components, ensuring reliable performance and durability. The 21759 alternator benefits from this quality-focused remanufacturing approach, providing a cost-effective alternative to new units without compromising functionality.
Detailed Product Description
This Remy alternator 21759 is specifically designed for 12-volt electrical systems and delivers a 110-amp output suitable for vehicles requiring moderate electrical loads. The internal fan design helps maintain optimal operating temperatures, while the internal voltage regulator simplifies installation by eliminating the need for external components. The included pulley and clockwise rotation direction ensure compatibility with the original drive system. This alternator is a remanufactured replacement part originally manufactured by Delco/Delphi and supersedes part number 21756, making it suitable for a range of Buick, Chevrolet, and Pontiac models.
Compatible Vehicles and Common Applications
- Buick Century
- Chevrolet Impala
- Chevrolet Lumina
- Pontiac Grand Prix
- Chevrolet Monte Carlo
This alternator addresses issues such as battery not charging, dimming headlights, electrical system warning lights, and intermittent power loss.
Installation Notes and Tips
When installing the Remy 21759 alternator, ensure the pulley aligns correctly with the belt system and verify the clockwise rotation matches the original unit. The internal voltage regulator reduces wiring complexity, but it is important to check all electrical connections for corrosion or damage before installation. Proper torque specifications should be followed to avoid mounting issues.
Quality Assurance and Warranty
Remy Premium Remanufactured alternators undergo rigorous testing to meet OEM performance standards. While specific warranty details are not provided here, Remy products typically include coverage against defects in materials and workmanship. Confirm warranty terms with the supplier or manufacturer documentation.
| Brand | Remy |
| Part Number | 21759 |
| Position | Premium Remanufactured |
| Amperage Rating | 110 |
| Fan Type | Internal |
| New or Remanufactured | Remanufactured |
| OE Manufacturer | Delco/delphi |
| Part Status | Superseded to 21756 |
| Pulley Included | Yes |
| Rotation Direction | Clockwise |
| Voltage (V) | 12 |
| Voltage Regulator Type | Internal |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2003 | Pontiac | Grand Prix | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2002 | Pontiac | Grand Prix | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2001 | Buick | Century | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2001 | Chevrolet | Impala | 3.4L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2001 | Chevrolet | Lumina | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2001 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2001 | Pontiac | Grand Prix | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2000 | Buick | Century | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2000 | Chevrolet | Impala | 3.4L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2000 | Chevrolet | Lumina | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2000 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 2000 | Pontiac | Grand Prix | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 1999 | Buick | Century | 3.1L | V6 | N/A | 110 Amps; Superseded; Premium Remanufactured |
| 1999 | Pontiac | Grand Prix | 3.1L | V6 | N/A | 110 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.