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Bosch AL0842N Alternator
Bosch AL0842N Alternator Overview
The Bosch AL0842N is a new 14-volt alternator built for BMW charging-system service on select 2006-2008 applications. With a 155-amp rating, internal regulator, internal fan, and included pulley, it is specified for dependable electrical output in BMW 325i, 330i, and Z4 models.
Key Features
- New Bosch alternator, part number AL0842N
- 14-volt, 155-amp output
- Internal regulator and internal fan design
- Clockwise rotation
- 6-groove pulley included
- Aluminum case and aluminum housing construction
- Outside pulley diameter: 49 mm
- 6S-CP pulley/belt type
Product Details
Bosch Premium Alternators are engineered, assembled, and tested for consistent charging performance and dependable operation. The AL0842N follows that product line approach with a new-build design, integrated voltage regulation, and OE-style specifications for BMW charging systems. This alternator cross-references BMW 12317543083 for the same application.
Compatible With select BMW applications, this alternator is listed for Fits 2006 BMW 325i, N/A; Fits 2006 BMW 330i, N/A; and Fits 2006-2008 BMW Z4, N/A. The Bosch AL0842N is a direct-fit charging component for vehicles requiring a 155-amp alternator with the listed mounting and pulley configuration.
Common Charging Issues It Can Address
- Low battery charge caused by alternator output loss
- Battery warning light related to charging-system faults
- Dim lights or unstable electrical performance
- Charging voltage irregularities from a worn internal regulator
- Noise or belt-drive concerns tied to alternator wear
Installation Notes
Verify pulley groove count, rotation direction, plug orientation, and mounting-ear position before installation. This unit is specified with a rear-view main mounting ear at 6 o’clock, clockwise rotation, and a 6-groove pulley. Confirm the vehicle’s charging-system requirements and inspect the belt and electrical connections during replacement.
Quality Assurance
Bosch positions this Premium Alternator line as a tested replacement built for performance and reliability. The AL0842N is a new alternator, not remanufactured, and is manufactured to meet the listed electrical and fitment specifications for the covered BMW applications.
| Brand | Bosch |
| Part Number | AL0842N |
| Position | Alternator (New) |
| Voltage | 14 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 12 |
| Fan Type | Internal |
| Rotation Direction | Clockwise |
| Pulley Included | Yes |
| Pulley Groove Quantity | 6 |
| Case Color | Aluminum |
| Outside Pulley Diameter | 49 |
| Regulator Type | Internal |
| Case Material | Aluminum |
| Amperage Rating | 155 |
| Cases Per Pallet (ORLY) | 60 |
| New Or Remanufactured | New |
| Original Equipment Manufacturer Names | Bo |
| Product Length | 6.850394 in |
| Pulley Type / Belt Type (Alternator) | 6s-cp |
| Unit(s) per Car Qty (ORLY) | 1 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2008 | BMW | Z4 | 3.0L | L6 | N/A | To 155 Amp Alternator; Alternator (New) |
| 2007 | BMW | Z4 | 3.0L | L6 | N/A | To 155 Amp Alternator; Alternator (New) |
| 2006 | BMW | 325i | 3.0L | L6 | N/A | To 155 Amp Alternator; Alternator (New) |
| 2006 | BMW | 330i | 3.0L | L6 | N/A | To 155 Amp Alternator; Alternator (New) |
| 2006 | BMW | Z4 | 3.0L | L6 | N/A | To 155 Amp Alternator; Alternator (New) |
* 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.