Bosch AL0814N Alternator

Bosch AL0814N Alternator Overview

The Bosch AL0814N is a new 14-volt alternator built for charging-system performance and dependable electrical output. It is a direct-fit replacement for select BMW applications, including BMW X3, 325Ci, 325i, 525i, and 530i models with the specified amperage and build-date requirements.

Bosch Premium Alternators are engineered, built, and tested for consistent operation, and this unit follows that approach with an internal regulator, internal fan, and aluminum case construction.

Key Features

• 14-volt alternator with a 150-amp amperage rating
• New Bosch alternator, part number AL0814N
• Internal regulator and internal fan design
• Clockwise rotation
• 6-groove pulley included
• Aluminum case and aluminum case material for OE-style fitment
• Outside pulley diameter: 50 mm
• Plug type 381 with rear-view plug clock position at 6 o’clock
• Not one-wire capable
• External fan included

Detailed Description

The Bosch AL0814N alternator is a new charging-system component for BMW vehicles that require a 150-amp or 155-amp alternator depending on model, year, and build date. It is listed for BMW X3 2004-2006, BMW 325Ci 2004-2005, BMW 325i 2003-2005, BMW 525i 2004-2005, and BMW 530i 2004-2005. This part number AL0814N is also cross-referenced to OE numbers 12317519723 and 12317541694 for the same application.

As part of Bosch’s Alternator (New) line, this unit is built for direct replacement use where stable charging voltage and correct pulley and connector configuration matter. The 6-groove pulley, internal regulator, and clockwise rotation support proper belt-drive and electrical system operation in the listed BMW applications.

What This Alternator Helps Address

• Battery warning light caused by charging-system failure
• Low system voltage during driving or idle operation
• Dim lights or inconsistent electrical performance
• Battery drain related to alternator output loss
• Noise or charging issues from a worn original alternator

Installation Notes and Fitment

Compatible With BMW X3 2004-2006, N/A, to 150 amp alternator; BMW X3 2006, N/A; BMW 325Ci 2004-2005, N/A; BMW 325i 2003-2005, N/A, to 155 amp alternator; BMW 325i 2004-2005, N/A, alternator without cooling duct, to 150 amp alternator; BMW 525i 2005, N/A, to 155 amp alternator; BMW 530i 2005, N/A, to 155 amp alternator; BMW 525i 2004, N/A, to 02/2004, to 150 amp alternator; BMW 525i 2004, N/A, from 03/2004, to 155 amp alternator; BMW 530i 2004, N/A, to 02/2004, to 150 amp alternator; BMW 530i 2004, N/A, from 03/2004, to 155 amp alternator.

Verify the original alternator amperage, connector style, pulley configuration, and build date before installation. This Bosch AL0814N alternator is not one-wire capable and uses an internal regulator, so the vehicle’s charging system should match those specifications.

Quality Assurance

Bosch Premium Alternators are designed, built, and tested to deliver reliable performance in demanding electrical systems. The AL0814N reflects Bosch’s OE-focused approach to replacement charging components for BMW applications.