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Bosch AL4039X Alternator
| Brand | Bosch AL4039X |
|---|---|
| Amperage Rating | 90 |
| Case Color | Aluminum |
| Case Material | Aluminum |
| External Fan Included | Yes |
| External Regulator Included | Yes |
| Fan Type | Internal |
| New Or Remanufactured | Remanufactured |
| One Wire Capable | No |
| Original Equipment Manufacturer Names | MI |
| Outside Pulley Diameter | 60 |
| Packaging | Box |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 4 |
| Plug Type | 307 |
| Pulley Groove Quantity | 5 |
| Pulley Included | Yes |
| Pulley Type | 5S |
| Pulley Type / Belt Type (Alternator) | 5S |
| Regulator Type | Internal |
| Rotation Direction | Clockwise |
| Voltage | 12 |
| Product line | Alternator (Remanufactured) |
| Fits | Mitsubishi · 7 vehicles |
Remanufactured alternator. Built and tested for dependable charging performance.
Aluminum case. Lightweight construction helps manage heat and durability.
Internal fan. Promotes efficient cooling during operation.
Cross-references MD357737 for the same application. See all 1.
Bosch AL4039X Remanufactured Alternator
The Bosch AL4039X is a remanufactured 12-volt alternator built for charging-system replacement on select Mitsubishi applications. It is designed for dependable output, with a 90-amp rating, internal fan design, and internal voltage regulation for consistent electrical performance.
Key Features
- Remanufactured Bosch alternator for charging-system service
- 12-volt, 90-amp output
- Internal fan and internal regulator design
- Clockwise rotation
- Aluminum case and aluminum housing construction
- 5-groove pulley with 60 mm outside diameter
- Plug type 307 with rear-view plug clocking at 6 o’clock
- External fan included and pulley included
- Cross-reference: Mitsubishi MD357737
Product Details
Bosch Premium Alternators are remanufactured, tested, and built to support reliable charging performance in everyday driving. The AL4039X is a direct-fit alternator for 1999 Mitsubishi Galant and 2000-2005 Mitsubishi Eclipse applications, including 2003-2005 Mitsubishi Eclipse models noted for use with a 90-amp alternator. This Bosch AL4039X alternator is a practical OE-style replacement for drivers addressing charging output concerns on Mitsubishi Eclipse and Mitsubishi Galant vehicles.
Common Issues This Alternator Can Address
- Battery warning light caused by low alternator output
- Dim headlights or unstable electrical performance
- Battery drain from a failing charging system
- Charging voltage that drops under load
- Noise or wear associated with a deteriorating alternator assembly
Installation Notes and Tips
Verify pulley groove count, plug type, rotation direction, and amperage rating before installation. Confirm the vehicle’s charging-system configuration matches the listed fitment for 1999 Mitsubishi Galant and 2000-2005 Mitsubishi Eclipse applications. Inspect the belt, electrical connectors, and battery condition during replacement to help ensure proper charging-system operation.
Quality Assurance
This Bosch remanufactured alternator is produced under Bosch’s premium alternator program, with design, build, and testing processes focused on performance and reliability. It is packaged in a box and built as a remanufactured replacement for confirmed Mitsubishi applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | To 90 Amp Alternator; Alternator (Remanufactured) |
| 2004 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | To 90 Amp Alternator; Alternator (Remanufactured) |
| 2003 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | To 90 Amp Alternator; Alternator (Remanufactured) |
| 2002 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | Alternator (Remanufactured) |
| 2001 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | Alternator (Remanufactured) |
| 2000 | Mitsubishi | Eclipse | 2.4L | L4 | N/A | Alternator (Remanufactured) |
| 1999 | Mitsubishi | Galant | 2.4L | L4 | N/A | Alternator (Remanufactured) |
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