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MPA Electrical 7891503 Alternator
| Brand | MPA Electrical 7891503 |
|---|---|
| Amps | 105 Amps |
| Clock | 3:00 |
| Fan | External |
| Manufacturer | Delco |
| Pulley | 5 Groove Serpentine |
| Regulator | Internal |
| Rotation | Clockwise |
| Volts | 12 Volts |
| Product line | Remanufactured |
| Fits | Chevrolet and GMC · 4 vehicles |
Remanufactured unit. A rebuilt alternator for dependable charging performance.
105 amps. Provides strong output for steady electrical demand.
Internal regulator. Simplifies the charging system with integrated control.
Cross-references 7697, 7802-3 and 7967-3 for the same application. See all 8.
Remanufactured Alternator for 1991 GM 105-Amp Applications
MPA Electrical Part Number 7891503 is a remanufactured 12-volt alternator built for 1991 Chevrolet R3500 and V3500, as well as 1991 GMC R3500 and V3500 models equipped with a 105 amp alternator. It uses an internal regulator, clockwise rotation, an external fan, and a 5-groove serpentine pulley for the specified Delco-style application.
Key Features
- 105 amps output for 12-volt charging systems
- Internal regulator for integrated voltage control
- Clockwise rotation with external cooling fan
- 5-groove serpentine pulley configuration
- Delco manufacturer application
- Remanufactured electrical component
- Clock position: 3:00
Product Details
This MPA Electrical remanufactured alternator, part number 7891503, is specified for GM heavy-duty truck applications that use a 105 amp charging setup. It is listed for 1991 Chevrolet R3500 and V3500 models, plus 1991 GMC R3500 and V3500 models, making it a direct-fit replacement for the correct Delco alternator configuration. The 105 amp output supports stable charging performance in vehicles that rely on a 12-volt electrical system and a serpentine belt drive.
This part cross-references 7697 and 7802-3 for the same application.
Common Issues This Alternator Can Address
- Battery warning light caused by charging system failure
- Low system voltage during engine operation
- Dim lights or electrical accessories losing power
- Alternator noise from worn internal components
- Charging output loss in 105 amp Delco-style setups
Installation Notes and Tips
Verify the vehicle is equipped with a 105 amp alternator before ordering. Confirm pulley groove count, rotation direction, regulator style, and clock position against the original unit to match the 7891503 application. This alternator fits 1991 Chevrolet R3500, N/A; 1991 Chevrolet V3500, N/A; 1991 GMC R3500, N/A; and 1991 GMC V3500, N/A, with notes indicating standard vehicles equipped with a 105 amp alternator.
Quality Assurance
MPA Electrical supplies remanufactured electrical components for charging-system replacement applications. Part number 7891503 is built to the listed Delco-style specifications for the confirmed GM truck fitment.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Chevrolet | R3500 | 5.7L | V8 | N/A | Standard, w/ 105 amp alt.; Remanufactured |
| 1991 | Chevrolet | V3500 | 5.7L | V8 | N/A | Standard, w/ 105 amp alt.; Remanufactured |
| 1991 | GMC | R3500 | 5.7L | V8 | N/A | Fits vehicles equipped with a 105 amp alternator.; Remanufactured |
| 1991 | GMC | V3500 | 5.7L | V8 | N/A | Fits vehicles equipped with a 105 amp alternator.; Remanufactured |
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