Mercedes W204 W211 Alternator Generator OM646 Diesel Bosch 180A A0131549002

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W204 W211 Alternator Generator OM646 Diesel Bosch 180A is an efficient charging system component designed for OM646 diesel engines in Mercedes W204 and W211 class vehicles. It is responsible for providing stable power to the electrical system and charging the battery, which is crucial for the reliable operation of all vehicle systems. Thanks to its high-current output design, it serves as a solid foundation for maintaining the efficiency of the electrical system in cars with extensive equipment.

Specifications and technical data

• SKU: A0131549002-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0131549002
• Substitutable numbers: A0131549002, A 013 154 90 02, 0121715029, 0 121 715 029
• Fuel type: Diesel
• Part type: Alternator
• Category: Alternators & Generators

Purpose and compatibility

The presented alternator is a component from the Alternators and generators group, designed to work with Diesel engines from the OM646 family. Its design is adapted to the operating characteristics of diesel engines, which require stable charging under varying speeds and loads. Its application in Mercedes W204 and W211 models ensures consistency with the manufacturer's factory solutions.

Operating parameters and role in the electrical system

The 180A output alternator provides an adequate power reserve for vehicles equipped with numerous electrical consumers, such as comfort systems, onboard electronics, or additional control modules. High current efficiency:

• stabilizes voltage in the electrical system under high load,
• ensures effective battery charging in both urban and extra-urban conditions,
• reduces the risk of voltage drops that affect the operation of control units.

As a result, the charging system remains more resistant to load fluctuations, which translates into more reliable vehicle performance in daily operation.

Benefits of using a Bosch alternator in Mercedes OM646

Using an alternator with parameters consistent with the requirements of the OM646 engine allows for maintaining the factory operating characteristics of the electrical system. The most important advantages include:

• Proper fit for the diesel unit – charging characteristics adapted to the torque and RPM range of the diesel engine.
• Consistency with the electrical architecture of the Mercedes W204 and W211 – the alternator works with factory control units and the wiring harness intended for this generation of vehicles.
• Possibility of use in cars with rich electrical equipment, where high current efficiency is required.

Product condition and service application

The offered alternator is in used condition, making it a practical service solution for charging system repairs in Mercedes vehicles with the OM646 engine. It can be used both as a replacement part in the event of a failure and as part of a preventive replacement of consumable components. Choosing a used alternator is often economically advantageous while maintaining the functionality required for daily operation.

Part selection by numbers and vehicle integration

The alternator has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection of the correct component for a specific vehicle configuration. This makes it possible to verify compatibility with a given Mercedes W204 or W211 unit, as well as to compare it with other references used in the same engine family. This approach minimizes the risk of installing the wrong component and supports proper integration with the powertrain and electrical system.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as alternators with different outputs, generators for other engine versions, or compatible charging system components, check the available parts in the Mercedes alternators and generators category.