The Story
This Bosch alternator is the correct charging unit for the Porsche applications listed in the fitment table below. It is built to restore battery charging and electrical system output so the car can maintain stable voltage under normal running conditions. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.
Technical Details
- Manufacturer part number: AL-401-X
- Output rating: 90 amp
- Product type: remanufactured alternator
- Service note: this version commonly includes an aftermarket voltage regulator; confirm regulator requirements before installation
- Fitment note: use the table below to verify year and submodel application
Fitment & Compatibility
Use the fitment table below to confirm year, model, submodel, and notes before ordering.
If you need help checking fitment, send us your VIN. We’ve been handling Porsche parts questions for over 20 years, and we still treat fitment details like they matter.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1984 | Porsche | 911 | ||
| 1985 | Porsche | 911 | ||
| 1986 | Porsche | 911 | ||
| 1987 | Porsche | 911 | ||
| 1988 | Porsche | 911 | ||
| 1989 | Porsche | 911 | Carrera | |
| 1989 | Porsche | 911 | Speedster | |
| 1989 | Porsche | 911 | Turbo Carrera |
Description
This Bosch alternator is the correct charging unit for the Porsche applications listed in the fitment table below. It is built to restore battery charging and electrical system output so the car can maintain stable voltage under normal running conditions. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.
Technical Details
- Manufacturer part number: AL-401-X
- Output rating: 90 amp
- Product type: remanufactured alternator
- Service note: this version commonly includes an aftermarket voltage regulator; confirm regulator requirements before installation
- Fitment note: use the table below to verify year and submodel application
Fitment & Compatibility
Use the fitment table below to confirm year, model, submodel, and notes before ordering.
If you need help checking fitment, send us your VIN. We’ve been handling Porsche parts questions for over 20 years, and we still treat fitment details like they matter.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1984 | Porsche | 911 | ||
| 1985 | Porsche | 911 | ||
| 1986 | Porsche | 911 | ||
| 1987 | Porsche | 911 | ||
| 1988 | Porsche | 911 | ||
| 1989 | Porsche | 911 | Carrera | |
| 1989 | Porsche | 911 | Speedster | |
| 1989 | Porsche | 911 | Turbo Carrera |
