Bosch AL166X Alternator

Bosch AL166X Remanufactured Alternator

The Bosch AL166X remanufactured alternator is built for 12-volt charging systems and rated at 100 amps for steady electrical output. It is a direct-fit charging component for select Mercedes-Benz models, including Mercedes-Benz 300SE, 300SD, 300SL, 500SL, and S350 applications.

Key Features

• Remanufactured Bosch alternator for 12V systems
• 100 amp amperage rating for OE-style charging performance
• Internal regulator design with external regulator included
• External fan included for cooling support
• 6-groove pulley included with 50 mm outside pulley diameter
• Clockwise rotation direction
• Aluminum case and aluminum case material
• Plug type 381 with rear-view plug clock position at 6 o’clock

Product Details

Bosch Premium Alternators are engineered, assembled, and tested to deliver consistent electrical performance and dependable operation. The AL166X follows Bosch remanufactured alternator standards and is built for vehicles that require a 100 amp charging unit with a 6-groove belt drive. This Bosch AL166X alternator is a practical OE-style replacement for Mercedes-Benz charging system service, especially when restoring proper battery charging and electrical stability.

This part cross-references Bosch OE numbers 0081544002 and 0081544202 for the same application.

Vehicle Fitment

• Fits 1994-1995 Mercedes-Benz S350, N/A, to 100 Amp Alternator; Alternator (Remanufactured)
• Fits 1992-1993 Mercedes-Benz 300SD, N/A, to 100 Amp Alternator; Alternator (Remanufactured)
• Fits 1990-1993 Mercedes-Benz 300SL, N/A, to 100 Amp Alternator; Alternator (Remanufactured)
• Fits 1990-1993 Mercedes-Benz 500SL, N/A, to 100 Amp Alternator; Alternator (Remanufactured)
• Fits 1992 Mercedes-Benz 300SE, N/A, to 100 Amp Alternator; Alternator (Remanufactured)

Common Issues This Part Can Address

• Low battery charging output
• Battery warning light illumination
• Dim lights or unstable electrical performance
• Alternator noise from worn internal components
• Charging system failure on Mercedes-Benz 300SE, 300SD, 300SL, 500SL, or S350 models

Installation Notes

Verify pulley style, plug type, rotation direction, and amperage rating against the original unit before installation. Confirm the vehicle uses a 6-groove belt setup and the specified rear plug orientation. For Mercedes-Benz 300SE, 300SD, 300SL, 500SL, and S350 fitments, compare the original alternator housing and connector layout to the Bosch AL166X before replacement.

Quality Assurance

This Bosch remanufactured alternator is tested to support reliable charging-system operation and consistent fitment for the listed Mercedes-Benz applications. Bosch’s Premium Alternator line is built around performance and reliability standards for replacement charging components.