Mercedes W204 W207 W212 W221 Starter Motor A6429060900

The Mercedes W204 W207 W212 W221 Starter Motor A6429060900 is an original part from the Starters group, designed for Mercedes diesel engines. Thanks to its factory design, it ensures reliable engine starting, stable operation under high loads, and proper fitment for the starting system of specific model series.

Specifications and technical data

• SKU: A6429060900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6429060900
• Substitutable numbers: A6429060900, A 642 906 09 00, 0001149404, 0 001 149 404
• Fuel type: Diesel
• Category: Starter Motors

Intended Use and Technical Compatibility

The presented starter motor is dedicated to Mercedes vehicles of the W204, W207, W212, and W221 classes with Diesel engines. This means its construction, electrical parameters, and mechanical features have been designed to match the torque characteristics and starting resistance of diesel units, which translates to efficient engine starting, both when cold and when the system is warm.

This component belongs to the Starters category, making it an integral part of the starting system, working in conjunction with the vehicle's electrical system, engine control unit, and the mechanical accessories of the power unit.

Performance Parameters and Design Advantages

The starter motor has been designed for stable operation in the high compression conditions typical for diesel engines. The appropriately selected gear ratio, the design of the one-way clutch, and the operating characteristics of the electric motor ensure:

• reliable initiation of crankshaft rotation under high compression resistance,
• proper cooperation with the engine's flywheel,
• adequate starting dynamics while maintaining smooth system operation.

Thanks to the use of factory solutions, the starter motor retains the correct mounting points and housing geometry, which facilitates installation in the engine bay and minimizes the risk of improper fitment with other drive components.

Product Characteristics and Service Application

As a component from the Starters group intended for diesel units, this product is suitable for both standard replacement of a worn starter motor and for comprehensive service work on the starting system. Appropriately selected electrical parameters allow for cooperation with the factory engine control and onboard electrical system, which is crucial for maintaining correct voltage drops and current loads during starting.

The starter motor is particularly recommended in situations where symptoms such as slow starting, irregular crankshaft rotation, or problems starting the diesel engine after a prolonged stop occur. Replacing it with a correctly chosen part helps restore the system's proper functionality and reduces additional strain on the battery.

Installation and Operational Aspects

Due to its factory origin and fitment for specific body series, the starter motor can be installed in the location designated by the vehicle manufacturer, maintaining the original mounting points and correct position relative to the flywheel. This allows for reduced service time and minimizes the need for additional system modifications.

A correctly chosen starter motor for a diesel engine also contributes to starting stability in low temperatures, which is important for the longevity of the battery, alternator, and the entire electrical system. Proper operation of the starting system reduces the risk of overloads and undesirable voltage drops in the vehicle's electrical system.

Starting System Expansion and Technical Knowledge

If you are planning a comprehensive engine area repair or upgrade for your Mercedes and require other parts from the same group, such as additional starters, mounting elements, or cooperating accessories, check the available parts in the Mercedes Starters category.

For users interested in a broader technical context, especially regarding S-Class models, an article discussing the development of design solutions and the selection of service parts may be useful – find more information in the material on the evolution of the Mercedes S-Class and the selection of wear parts.