Bosch AL0749X Alternator

Bosch AL0749X Remanufactured Alternator

The Bosch AL0749X is a remanufactured 12-volt alternator built for BMW charging-system applications that require an 80-amp output. It features an internal fan, internal regulator, clockwise rotation, and a 6-groove pulley for proper belt alignment in the specified vehicles.

Bosch Premium Alternators are remanufactured, built, and tested to deliver consistent electrical performance and dependable operation. This Bosch alternator is a direct-fit charging component for select BMW 320i, 325i, 328i, M3, 525i, and Z3 applications.

Key Features

• 12-volt remanufactured alternator
• 80-amp amperage rating
• Internal fan and internal regulator
• Clockwise rotation direction
• 6-groove pulley included
• Aluminum case and aluminum case material
• External fan included
• External regulator included
• Plug type 381 with rear-view plug clock at 9 o’clock
• Cross-reference: BMW 12311735792, 12311744560

Detailed Description

Built for BMW charging systems, Bosch AL0749X remanufactured alternator replacement is engineered around the listed OE-style specifications, including a 50 mm outside pulley diameter, 6S pulley type, and clockwise rotation. The aluminum housing helps maintain a durable, OE-style fit, while the internal fan and regulator support stable charging performance in the correct application. This part number, AL0749X, is a practical replacement for vehicles that call for an 80-amp Bosch alternator with the matching plug and mounting configuration.

Compatible With BMW 1992-1995 320i, 1992-1995 325i, 1992-1995 325is, 1992-1995 525i, 1994-1999 M3, 1996-1999 328i, 1996-1999 328is, 1998-1999 323i, 1998-1999 323is, and 1998-2000 Z3. The Bosch AL0749X is also a fit for 1992 BMW 525i with Bosch unit and internal fan requirements noted in the fitment data.

What It Helps Solve

• Battery warning light caused by low alternator output
• Dim headlights or unstable electrical performance
• Charging-system failure from a worn remanufactured unit
• Voltage drop that affects starting and accessory operation
• Belt-drive issues when the alternator pulley no longer matches specification

Installation Notes and Tips

Verify the vehicle’s original alternator amperage, plug type, pulley configuration, and mounting-ear orientation before installation. This part is not one-wire capable, so confirm the charging-system wiring matches the OE-style setup. The fitment data lists BMW applications with notes for 80-amp alternator requirements; match those details to the vehicle before replacing the unit. Part number AL0749X should be compared against the original unit and any OE cross-reference numbers during diagnosis.

Quality Assurance

Bosch Premium Alternators are remanufactured and tested to support reliable charging-system performance. The AL0749X follows Bosch’s specified application details for the listed BMW vehicles and is built to meet the electrical and mechanical requirements of the original design.