Bosch AL0703X Alternator

Bosch Remanufactured Alternator for BMW Charging Systems

The Bosch AL0703X is a remanufactured 12-volt alternator built for BMW charging-system service where stable output and OE-style fit are required. It delivers a 120-amp rating with an internal fan, internal regulator, and included pulley for direct replacement use on select BMW 3 Series, 5 Series, and X5 applications.

Key Features

• 12-volt remanufactured alternator with 120-amp output
• Internal fan and internal regulator for integrated charging control
• Included pulley with 6-groove, 6S belt design
• Aluminum case and aluminum housing construction
• Clockwise rotation
• Square-connector applications noted in fitment
• Bosch Premium Alternators are built and tested for performance and reliability

Product Details

Designed for BMW charging-system repair, Bosch AL0703X supports vehicles that require a 120 amp alternator with the specified plug clocking and connector style. This remanufactured Bosch alternator is listed for BMW 325Ci, 330Ci, 330xi, X5, 320i, 325i, 325xi, 330i, 525i, 530i, Z3, 323Ci, 323i, 328Ci, 328i, and 528i applications across model years 1998 through 2006. This part number, AL0703X, also cross-references Bosch-style OE applications for the same use case.

Bosch’s Premium Alternator line focuses on remanufactured charging components that are inspected and tested to meet demanding electrical-system requirements. For BMW owners and technicians, AL0703X is a practical replacement when the original alternator no longer maintains proper battery charging or system voltage.

What It Helps Fix

• Battery warning light caused by alternator output loss
• Low charging voltage at idle or under electrical load
• Dim lights, slow accessory operation, or weak electrical performance
• Battery drain from an alternator that no longer charges correctly
• Charging-system faults on BMW 325Ci, 330i, 525i, and related models

Installation Notes and Tips

Verify the vehicle’s alternator configuration before installation, including 120-amp rating, square connector use where noted, plug clocking, and pulley/belt style. Fits 2001-2006 BMW 325Ci, N/A; Fits 2001-2006 BMW 330Ci, N/A; Fits 2001-2006 BMW 330xi, N/A; Fits 2001-2006 BMW X5, N/A; Fits 2001-2005 BMW 320i, N/A; Fits 2001-2005 BMW 325i, N/A; Fits 2005 BMW 325i, N/A; Fits 2001-2005 BMW 325xi, N/A; Fits 2001-2005 BMW 330i, N/A; Fits 2003-2004 BMW 325i, N/A; Fits 2003 BMW 325Ci, N/A; Fits 2001-2003 BMW 525i, N/A; Fits 2001-2003 BMW 530i, N/A; Fits 2001-2002 BMW Z3, N/A; Fits 2000 BMW 323Ci, N/A; Fits 1999-2000 BMW 323i, N/A; Fits 2000 BMW 328Ci, N/A; Fits 1999-2000 BMW 328i, N/A; Fits 1998-2000 BMW 528i, N/A; Fits 1998 BMW 323i, N/A. Confirm belt alignment and electrical connector match before final assembly.

Quality Assurance

Bosch remanufactured alternators are designed, built, and tested to support reliable charging performance. The AL0703X is packaged in a box and built with aluminum case materials for service-ready replacement use.