Bosch AL66X Alternator

Bosch AL66X Remanufactured Alternator

The Bosch AL66X remanufactured alternator is built for 12-volt charging systems that need stable output and dependable electrical performance. It is a direct-fit replacement for select Mercedes-Benz applications, including 1990-1993 Mercedes-Benz 190E, 300E, and 300TE, plus 1990-1991 Mercedes-Benz 300SE and 300SEL.

Bosch Premium Alternators are remanufactured, tested, and configured to deliver consistent charging performance and reliability. The AL66X uses an aluminum case, external fan, internal regulator, and a 6-groove pulley setup for the specified OE-style application.

Key Features

• 12-volt remanufactured alternator for charging-system replacement
• 80 amp amperage rating for select Mercedes-Benz applications
• Internal regulator with external fan included
• 6-groove pulley included; 55 mm outside pulley diameter
• Clockwise rotation
• Aluminum case and aluminum case color
• Plug type 381 with rear-view plug clocking at 6 o’clock main mounting ear
• Cross-reference: 0081544802

Product Details

The Bosch AL66X alternator is designed for drivers and technicians replacing a worn charging unit in Mercedes-Benz 190E, 300E, 300TE, 300SE, or 300SEL models. As a remanufactured Bosch Premium Alternator, it is built and tested to meet the demands of everyday electrical load, helping maintain battery charging and system voltage in the vehicle’s original configuration. This part number, AL66X, is a practical OE-style solution for 1990-1993 Mercedes-Benz charging-system service.

What It Helps Fix

• Battery warning light caused by alternator output loss
• Low charging voltage at idle or under electrical load
• Dim lights, weak accessories, or intermittent electrical operation
• Noise or wear associated with a failing alternator assembly
• Charging-system faults on Mercedes-Benz 190E, 300E, 300TE, 300SE, and 300SEL models

Installation Notes and Tips

Verify pulley type, plug type, rotation direction, and regulator configuration before installation. This AL66X alternator is one-wire capable: No, and it is listed with an external regulator included and an internal regulator type. Confirm the vehicle’s charging-system layout and belt setup match the 6-groove pulley and 12-volt specification before replacement. For best results, inspect the battery, belt condition, and charging connections during service.

Quality Assurance

Bosch remanufactured alternators are built, tested, and inspected for performance and reliability. The AL66X reflects Bosch’s premium remanufacturing process for charging-system replacement in select Mercedes-Benz applications.