Mercedes W169 W245 A B 160 180 200 CDI OM640 Alternator Generator LRA02885

Mercedes W169 W245 A B 160 180 200 CDI OM640 Alternator Generator is a used item from the Alternators and generators group, designed for the charging system in Mercedes A-Class and B-Class vehicles with the OM640 engine. This is a solution for users looking for a proven, factory-built design instead of budget replacements, while maintaining the correct operating parameters of the electrical system.

Specifications and technical data

• SKU: A6401540502-2
• Mark: Unbranded
• Condition: Used
• OEM Part Number: A6401540502
• Substitutable numbers: LRA02885, A6401540502, A 640 154 05 02
• Category: Alternators & Generators

Application and compatibility

The offered alternator is designed for Mercedes A-Class W169 and B-Class W245 models with OM640 series diesel engines, such as the 160, 180, and 200 CDI versions. This makes it the right choice when replacing the generator in cars used both in city traffic and on longer routes, where stable battery charging is crucial for the operation of all electrical consumers. The product comes from the Alternators and generators group, which means it has been designed specifically for operation in the charging system, with appropriately selected current characteristics and mechanical fitment for mounting in the OM640 engine.

Construction and functional parameters

The alternator acts as the main source of electrical energy in the vehicle, responsible for powering the electrical system and recharging the battery while the engine is running. The design of this model ensures:

• stable current generation in the typical RPM ranges of the OM640 engine,
• proper fitment to the factory belt drive accessories,
• compatibility with the standard electrical system of the Mercedes A-Class and B-Class. Thanks to the preservation of the original geometry and mounting points, the installation of the alternator in place of a worn-out unit is predictable and does not require structural modifications.

Condition, origin, and benefits of choosing a used alternator

The offered item is in used condition, which in practice means it has been dismantled from a vehicle and retains the manufacturer's factory design. For many users, this is a reasonable compromise between the purchase cost and maintaining the original operating parameters of the charging system. Compared to cheap remanufactured units, a used alternator with factory specifications often better maintains voltage stability, compatibility with vehicle electronics, and the durability of mechanical components. This is particularly important in more modern units, where the charging system is integrated with engine control and driving comfort systems. If you want to better understand why an original, used alternator from dismantling can be a more predictable solution than a budget remanufacture, it is worth reading the article: Starting system failure – why a used alternator and starter often outperform remanufacturing.

Service purpose and replacement scenarios

This alternator model is suitable for typical service tasks, such as:

• replacing a worn or damaged generator in a Mercedes A-Class or B-Class with an OM640 engine,
• restoring the efficiency of the charging system after problems with battery undercharging,
• post-accident repairs or engine accessory upgrades in vehicles of this series. For workshops and individual users, this means the possibility of using parts with a known design, without the need to adapt universal replacements. Proper selection of the alternator for a specific engine version reduces the risk of problems with charging voltage, the battery warning light, or compatibility with onboard electronics.

Brand and product group

The alternator is offered as an Unbranded product, which in practice means the absence of a commercial manufacturer's mark while maintaining the functionality required for this reference. For many users, this is a cost-effective solution, allowing for the replacement of a key charging system component without overpaying for a logo. If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other items from the same group, such as alternators, generators, or related charging system components, check out the available parts in the Unbranded Alternators and generators category.

Summary

Mercedes W169 W245 A B 160 180 200 CDI OM640 Alternator Generator is a practical solution for users and workshops that want to restore the efficiency of the charging system in Mercedes A-Class and B-Class vehicles with the OM640 diesel engine. A used item from the Alternators and generators group allows for maintaining the correct operating parameters of the electrical system while reducing costs compared to new parts signed by a premium brand.