Bosch AL0819X Alternator

Bosch Remanufactured Alternator AL0819X

Bosch AL0819X is a remanufactured 12-volt alternator built for steady charging performance and dependable electrical output. It is a fitment-based replacement for select Mercedes-Benz models, including Mercedes-Benz C320, CLK500, CLK55 AMG, C55 AMG, ML500, and SLK55 AMG applications.

Key Features

• Remanufactured Bosch alternator for charging-system replacement
• 12-volt design with 150-amp amperage rating
• Internal fan and internal regulator configuration
• Clockwise rotation direction
• 6-groove pulley with pulley included
• Aluminum case and aluminum case material
• External fan included and external regulator included as listed
• Plug type 367 with rear-view plug clocking at 6 o’clock

Product Details

Bosch Premium Alternators are remanufactured, built, and tested to deliver consistent electrical performance and reliability in demanding vehicle systems. This AL0819X alternator is engineered for Mercedes-Benz charging applications that require a 150-amp unit, including 2003-2005 Mercedes-Benz C320, 2003-2006 Mercedes-Benz CLK500, 2003-2006 Mercedes-Benz CLK55 AMG, 2005-2006 Mercedes-Benz C55 AMG, 2003-2004 Mercedes-Benz ML500, 2005 Mercedes-Benz ML500 with Valeo unit, and 2005-2011 Mercedes-Benz SLK55 AMG. This part cross-references Bosch 0121542702 and 0131548302 for the same application.

Common Charging Issues It Can Address

• Battery warning light caused by alternator output loss
• Low-voltage charging that affects starting and electrical accessories
• Dim lights or unstable electrical performance
• Charging-system noise related to alternator wear
• Failure of the original alternator on Mercedes-Benz C320, CLK500, CLK55 AMG, C55 AMG, ML500, or SLK55 AMG

Installation Notes and Tips

Verify the vehicle’s original alternator amperage, plug type, pulley style, and mounting configuration before installation. This AL0819X uses a 6-groove pulley, clockwise rotation, and a rear plug clocking position at 6 o’clock, so matching the OE layout is important for proper fitment. Confirm whether the vehicle is equipped with a Valeo unit on 2005 Mercedes-Benz ML500 applications.

Quality Assurance

Bosch remanufactured alternators are produced and tested to meet charging-system performance expectations for replacement use. The Bosch AL0819X is built for consistent operation in select Mercedes-Benz applications and is backed by Bosch’s remanufactured product standards.