OE Quality
60-Day Returns

Bosch AL0757X Alternator
Reliable Remanufactured Alternator for BMW Z4
The Bosch AL0757X Alternator (Remanufactured) is designed to restore the electrical charging system of your BMW Z4. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient performance for your vehicle's electrical components.
- Voltage: 12V for standard automotive electrical systems
- Amperage Rating: 150 amps to support high electrical loads
- Internal fan type with clockwise rotation direction
- Includes a 6-groove pulley with a 54.3 mm outside diameter
- Aluminum case material and color for durability and heat dissipation
- Internal regulator type for simplified installation and reliable voltage control
- Plug type 63 with 2 plug clock rear view main mounting ears at 6 o'clock
- Remanufactured unit with pulley included, no external fan or regulator included
About Bosch Alternator (Remanufactured) Product Line
The Bosch Alternator (Remanufactured) product line offers remanufactured alternators that meet strict quality standards to provide a cost-effective replacement option. These alternators are rebuilt using original components and tested to ensure performance and reliability comparable to new units. The AL0757X is part of this line, delivering dependable charging solutions specifically tailored for BMW vehicles like the Z4.
Detailed Product Description
This Bosch AL0757X alternator features a robust aluminum case that aids in heat dissipation and durability under demanding conditions. The internal fan design and clockwise rotation optimize airflow and cooling within the alternator housing. With a 150-amp output, it supports the electrical demands of the BMW Z4, including lighting, ignition, and accessory systems. The included 6-groove pulley with a 54.3 mm diameter ensures compatibility with the vehicle's belt system, facilitating smooth power transfer. The internal voltage regulator simplifies installation by eliminating the need for an external regulator.
Common Issues Addressed by This Alternator
- Battery not charging or frequently dying
- Dim or flickering headlights and dashboard lights
- Electrical system warning lights on the dashboard
- Unusual noises from the engine bay related to the charging system
- Loss of power to electrical accessories while driving
Installation Notes and Tips
- Ensure the vehicle is off and battery disconnected before installation
- Verify plug type 63 and mounting ear orientation match your BMW Z4
- Check belt condition and tension; replace if worn or damaged
- Use proper torque specifications for mounting bolts to avoid damage
- Test the alternator output after installation to confirm proper operation
Quality Assurance and Warranty
As a remanufactured product from Bosch, the AL0757X alternator undergoes rigorous testing to meet OEM standards. Bosch ensures that each unit delivers reliable performance and durability. Warranty coverage details should be confirmed at the point of purchase, typically including protection against defects in materials and workmanship.
| Brand | Bosch |
|---|---|
| Part Number | AL0757X |
| Position | Alternator (Remanufactured) |
| Amperage Rating | 150 |
| Case Color | Aluminum |
| Case Material | Aluminum |
| Cases Per Pallet (ORLY) | 60 |
| External Fan Included | No |
| External Regulator Included | No |
| Fan Type | Internal |
| New Or Remanufactured | Remanufactured |
| One Wire Capable | No |
| Original Equipment Manufacturer Names | VA |
| Outside Pulley Diameter | 54.3 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 2 |
| Plug Type | 63 |
| Pulley Groove Quantity | 6 |
| Pulley Included | Yes |
| Pulley Type | 6S |
| Pulley Type / Belt Type (Alternator) | 6S |
| Regulator Type | Internal |
| Rotation Direction | Clockwise |
| Voltage | 12 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2008 | BMW | Z4 | 3.2L | L6 | N/A | To 150 Amp Alternator; Alternator (Remanufactured) |
| 2007 | BMW | Z4 | 3.2L | L6 | N/A | To 150 Amp Alternator; Alternator (Remanufactured) |
| 2006 | BMW | Z4 | 3.2L | L6 | N/A | To 150 Amp Alternator; Alternator (Remanufactured) |
* 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.