Bosch AL0731X Alternator

Bosch AL0731X Remanufactured Alternator Overview

The Bosch AL0731X is a remanufactured 12-volt alternator built for charging-system replacement on select Volkswagen applications. It is rated at 70 amps and uses an internal regulator, internal fan, and a clockwise rotation design for the specified OE-style setup.

For Volkswagen Jetta, Beetle, and Golf charging system service, this Bosch alternator is built around the listed pulley, plug, and mounting specifications to match the original configuration.

Key Features

• Remanufactured Bosch alternator for 12-volt systems
• 70 amp amperage rating for OE-style charging output
• Internal regulator and internal fan design
• Clockwise rotation
• Includes pulley with 6-groove belt configuration
• Aluminum case and aluminum case color
• External fan included
• External regulator included
• Plug type 367 with rear-view plug clock position at 6 o’clock
• Part number AL0731X

Product Details

Bosch Premium Alternators are remanufactured, tested charging components built to restore electrical performance and reliability in the vehicle’s charging system. The AL0731X is specified with a 56 mm outside pulley diameter, 6S pulley type, and 6S-CP pulley and belt designation. This part cross-references Bosch OE numbers 038903023K and 038903023Q for the same application.

Compatible With 1998-2003 Volkswagen Beetle, 1999-2003 Volkswagen Jetta, and 1999-2001 Volkswagen Golf in the listed 70 amp Bosch or Valeo configurations. The Bosch AL0731X is a direct-fit style replacement for vehicles requiring the matching plug, pulley, and mounting-ear arrangement.

Common Charging System Issues It May Solve

• Battery warning light caused by alternator output loss
• Low charging voltage at idle or while driving
• Dim headlights or unstable electrical performance
• Battery drain from a failing alternator
• Charging-system noise related to worn internal components

Installation Notes and Tips

Verify the vehicle’s existing alternator amperage, plug type, pulley groove count, and mounting-ear orientation before installation. This unit is listed for 70 amp applications only, including Volkswagen Beetle, Jetta, and Golf configurations with Bosch or Valeo units as noted in the fitment data. Confirm belt alignment and electrical connector match prior to final assembly.

Quality Assurance

Bosch remanufactured alternators are built and tested to meet the demands of everyday charging-system service. The AL0731X follows the listed OE-style specifications for fitment, electrical connection, and pulley configuration.