Bosch AL0842X Alternator

Bosch AL0842X Remanufactured Alternator

The Bosch AL0842X remanufactured alternator is a 12-volt charging component built for BMW applications that require a 180-amp output and a 6-groove pulley setup. It is engineered for direct replacement use in select BMW Z4, 323i, 325i, and 330i models with the specified factory alternator configuration.

Key Features

• Remanufactured Bosch alternator for 12-volt charging systems
• 180-amp amperage rating for factory-style electrical output
• Internal fan and internal regulator design
• Clockwise rotation direction
• Aluminum case construction and aluminum case color
• Includes pulley with 6-groove belt interface
• External fan included
• External regulator included
• Plug type 463 with rear-view plug clocking at 12 o’clock and main mounting ear at 6 o’clock

Product Details

Bosch Premium Alternators are built and tested for dependable charging performance and consistent operation. The AL0842X is a remanufactured alternator with a 49 mm outside pulley diameter, internal fan design, and 6S-CP pulley and belt type configuration. This part cross-references BMW OE part number 12317543083 for the same application. It is a direct-fit charging system replacement for select BMW Z4, BMW 323i, BMW 325i, and BMW 330i vehicles that use the listed alternator specification.

Vehicle Fitment

• Fits 2006-2008 BMW Z4, N/A, to 155 amp alternator
• Fits 2007 BMW 323i, N/A, to 03/2007
• Fits 2006 BMW 323i, N/A, to 155 amp alternator
• Fits 2006 BMW 325i, N/A, to 155 amp alternator
• Fits 2006 BMW 330i, N/A, to 155 amp alternator

Common Uses

• Restores charging output when the original alternator is weak or failing
• Addresses battery warning lights caused by charging system faults
• Corrects low-voltage conditions that affect starting and electrical operation
• Replaces a worn alternator with the correct pulley and plug configuration
• Supports stable electrical performance in BMW charging systems

Installation Notes

Verify the vehicle’s original alternator amperage, plug type, pulley groove count, and mounting-ear clocking before installation. Confirm the application notes for BMW 323i, BMW 325i, BMW 330i, and BMW Z4 models, since fitment is limited to the listed production ranges and alternator specification. Match the connector and belt alignment to the original unit before final assembly.

Quality Assurance

Bosch remanufactured alternators are produced to meet Bosch’s charging-system standards and are tested before release for performance and reliability. The AL0842X is built as a remanufactured replacement for select BMW charging system applications.