Mercedes W164 W221 OM642 Diesel Engine Alternator Generator 14V 220A A0141541302

Mercedes W164 W221 OM642 Diesel Engine Alternator Generator 14V 220A is an efficient charging system component designed to work with the OM642 diesel unit. Thanks to its high amperage and stable 14V voltage, it ensures reliable power supply for the electrical system and the battery under demanding operating conditions. This solution is intended for users who expect a proven design and predictable performance parameters in Mercedes vehicles.

Specifications and technical data

• SKU: A0141541302-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0141541302
• Substitutable numbers: A0141541302, A 014 154 13 02, 0121813020, 0 121 813 020
• Fuel type: Diesel
• Part type: Alternator
• Category: Alternators & Generators

Purpose and role in the electrical system

The alternator from the Alternators and generators category is responsible for converting the mechanical energy of the OM642 diesel engine into electrical energy, which is necessary to power all electrical consumers in the vehicle. The high 220A current output allows for stable operation of extensive onboard electronics, comfort systems, and safety systems, even under heavy load.

In Mercedes W164 and W221 class vehicles, using a properly selected alternator is crucial for:

• maintaining the correct battery charge level during city and highway driving,
• uninterrupted operation of engine control units and assistance systems,
• reducing voltage drops when multiple consumers are operating simultaneously.

Compatibility with the OM642 diesel engine

The presented alternator has been configured to work with the OM642 diesel engine, which means it is matched in terms of rotational characteristics, load, and electrical system requirements typical for diesel units. The design is prepared for operation in the high-temperature and mechanical load conditions found in the engine compartment of Mercedes W164 and W221 vehicles.

Selecting an alternator dedicated to a specific fuel type and engine unit reduces the risk of charging problems, electronic interference, and accelerated wear of accessory drive components.

Characteristics of the used alternator

The offered item is in used condition, which allows for an economical replacement of a damaged alternator while maintaining the original mounting specifications. This type of solution is particularly attractive for users who want to keep their vehicle in good technical condition while controlling service costs.

The alternator, sourced from a dismantled Mercedes vehicle, retains factory compatibility with mounts, electrical connections, and the belt drive system, which facilitates installation and reduces workshop time.

Benefits of using an original Mercedes alternator

Using an alternator dedicated to W164 and W221 models with the OM642 diesel engine brings a number of practical benefits:

• Stable charging – high current output supports the operation of advanced comfort and safety systems.
• Structural fit – compatibility with the factory mounting system and electrical connections eliminates the need for modifications.
• Economical operation – a used component allows for lower repair costs while maintaining appropriate performance parameters.
• Consistency with the diesel system – an alternator prepared for cooperation with a diesel unit ensures the correct charging characteristics.

Charging system expansion and ecology

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 additional generators, alternators with similar performance, or compatible charging system parts, check out the available parts in the Mercedes alternators and generators category.

For drivers who pay attention to environmental aspects and want to better understand the benefits of reusing components, we recommend the article Eco-driving: discover the benefits of used car parts, which describes the impact of using used parts on reducing raw material consumption and operating costs.