Bosch AL0814X Alternator

Bosch Remanufactured Alternator AL0814X

Bosch AL0814X is a remanufactured 12-volt alternator built for steady charging performance and dependable electrical output. It is designed for BMW applications that require a 150-amp unit with a 6-groove pulley and internal regulation.

The Bosch Premium Alternators line focuses on rebuilt units that are tested for performance and reliability, making this alternator a practical OE-style replacement for BMW X3, 325i, 325Ci, 525i, and 530i charging system service.

Key Features

• Remanufactured Bosch alternator, part number AL0814X
• 12-volt, 150-amp output
• Internal fan and internal regulator
• Clockwise rotation
• 6-groove pulley with 50 mm outside diameter
• Aluminum case and aluminum housing material
• Includes pulley and external fan
• Plug type 381 with rear-view plug clock at 6 o’clock
• Not one-wire capable

Detailed Description

Bosch AL0814X is a remanufactured alternator engineered for BMW charging systems that call for a 150-amp unit. It uses an internal regulator, internal fan design, and clockwise rotation, with a 6S pulley setup that matches the specified belt drive configuration. The aluminum case helps keep the unit lightweight while maintaining the fit and mounting characteristics expected in OE replacement service. If you are replacing a failing BMW alternator, AL0814X provides a direct-fit electrical charging solution for the listed 3 Series and 5 Series applications, as well as BMW X3 models.

This part cross-references Bosch OE numbers and BMW OE references, including 12317519723 and 12317541694, for the same application.

What It Helps Solve

• Battery warning lights caused by weak charging output
• Low-voltage conditions that affect starting and accessory operation
• Dim lights or unstable electrical performance at idle
• Charging system failure from a worn alternator
• Voltage irregularities in BMW X3, 325i, 325Ci, 525i, and 530i applications

Installation Notes and Tips

• Verify the vehicle’s original amperage rating before installation; this unit is listed for 150-amp applications and some BMW fitments note 155-amp variants.
• Check the plug type and rear mounting-ear clock position against the original alternator before ordering.
• Inspect the belt, tensioner, and charging cables during replacement to avoid repeat charging issues.
• Confirm model-year notes carefully for 2004 BMW 525i and 530i applications, which vary by production date.

Quality Assurance

Bosch Premium Alternators are remanufactured, built, and tested to deliver consistent performance and reliability. AL0814X is a Bosch remanufactured alternator intended for BMW charging system service where OE-style fit and electrical output are required.

Compatible With

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