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MPA Electrical 7128109 Alternator
| Brand | MPA Electrical 7128109 |
|---|---|
| Amps | 42 Amps |
| Clock | 9:00 |
| Fan | External |
| Manufacturer | Delco |
| Pulley | 1 Groove V-belt |
| Regulator | Internal |
| Rotation | Clockwise |
| Volts | 12 Volts |
| Product line | Remanufactured |
| Fits | GMC, Chevrolet, American Motors, and Buick · 40 vehicles |
Remanufactured unit. A rebuilt alternator for dependable charging performance.
Internal regulator. Simplifies installation with fewer external components to manage.
1-groove V-belt pulley. Built for a straightforward belt-driven alternator setup.
Cross-references BBB Industries 7127-9, FTE 1100929 and FTE 1100930 for the same application. See all 97.
Remanufactured 42 Amp Alternator
MPA Electrical 7128109 is a remanufactured 12-volt alternator built for older GM charging systems that use a Delco-style layout. It features a 42 amp output, internal regulator, clockwise rotation, external fan, and a 1-groove V-belt pulley for direct replacement service.
Key Features
- 42 amp output for original-style charging performance
- 12 volt alternator with internal regulator
- Clockwise rotation and external fan configuration
- 1-groove V-belt pulley
- Delco manufacturer style
- Remanufactured for service replacement use
Fitment and Application
Compatible with select Chevrolet and GMC vehicles that use the listed alternator configuration. Fits 1982-1983 Chevrolet S10, N/A; 1983 Chevrolet S10 Blazer, N/A; 1982-1983 GMC S15, N/A; 1983 GMC S15 Jimmy, N/A; 1975-1982 Chevrolet G10, N/A; 1979-1982 Chevrolet G20, N/A; 1975-1976 Chevrolet G20, N/A; 1981-1982 Chevrolet G30, N/A; 1978-1979 Chevrolet G30, N/A; 1976 Chevrolet G30, N/A; 1979-1980 Buick Regal, N/A; 1973-1977 Chevrolet El Camino, N/A; 1973 Chevrolet Caprice, N/A. Fits 1986 GMC P2500, N/A and 1986 GMC P3500, N/A with a 42 amp alternator.
This part cross-references BBB Industries 7127-9 and FTE 1100929, 1100930 for the same application. Part number 7128109 is also referenced across multiple interchange listings for Delco-style charging system service.
What It Helps Address
- Low battery charge or repeated battery drain
- Dim lights caused by weak alternator output
- Charging system warning lights
- Voltage instability at idle or under load
- Failure of an aging original alternator
Installation Notes and Quality
Verify pulley type, rotation, regulator style, amperage, and mounting configuration before installation. This alternator is specified for vehicles without air conditioning in the listed applications, and the fitment notes should be matched to the vehicle exactly. MPA Electrical 7128109 is remanufactured to service replacement standards for Delco-type charging systems.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1986 | GMC | P2500 | 4.8L | L6 | N/A | Fits with a 42 amp alternator.; Remanufactured |
| 1986 | GMC | P3500 | 4.8L | L6 | N/A | Fits with a 42 amp alternator.; Remanufactured |
| 1983 | Chevrolet | S10 | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1983 | Chevrolet | S10 Blazer | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1983 | GMC | S15 | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1983 | GMC | S15 Jimmy | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G10 | 5.0L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G20 | 5.0L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G30 | 5.0L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | G30 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | Chevrolet | S10 | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1982 | GMC | S15 | 1.9L | L4 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1981 | Chevrolet | G10 | 5.0L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1981 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1981 | Chevrolet | G20 | 5.0L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1981 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1981 | Chevrolet | G30 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1980 | Buick | Regal | 4.9L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1980 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1980 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1979 | Buick | Regal | 4.9L | V8 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1979 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1979 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1979 | Chevrolet | G30 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1978 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1978 | Chevrolet | G30 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1977 | Chevrolet | El Camino | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1977 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1976 | Chevrolet | El Camino | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1976 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1976 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1976 | Chevrolet | G30 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1975 | Chevrolet | El Camino | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1975 | Chevrolet | G10 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1975 | Chevrolet | G20 | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1974 | Chevrolet | El Camino | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1973 | Chevrolet | Caprice | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
| 1973 | Chevrolet | El Camino | 4.1L | L6 | N/A | Fits vehicles without air conditioning.; Remanufactured |
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