Mercedes W204 W213 ML W166 OM642 Diesel Engine Starter Starting Unit A6429061000

Mercedes W204 W213 ML W166 OM642 Diesel Engine Starter Starting Unit is a factory-original starting system component designed for Mercedes diesel engines from the OM642 family. This unit, sourced from the Starters category, ensures proper operating parameters for Diesel-powered units, guaranteeing stable engine starting in daily use. It is a solution for users expecting compliance with Mercedes factory design standards.

Specifications and technical data

• SKU: A6429061000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6429061000
• Substitutable numbers: A6429061000, A 642 906 10 00
• Fuel type: Diesel
• Category: Starter Motors

Purpose and compatibility

The presented starter is dedicated to Mercedes vehicles equipped with the OM642 engine, used in, among others, popular C-Class and E-Class models, as well as ML-series SUVs. The design has been engineered to meet the requirements of Diesel units, which means a properly selected starting torque and resistance to thermal and mechanical loads typical for powerful diesel engines.

It is always recommended to verify the starter for a specific vehicle based on the OEM part number and interchangeable numbers visible in the technical specification to ensure full compatibility with the electrical and mechanical system of the given model.

Construction and performance parameters

The starter from the OM642 family uses a classic, proven DC electric motor design with a built-in mechanism for engaging with the flywheel ring gear. The applied solutions ensure:

• stable crankshaft rotation during diesel engine startup,
• appropriate starting torque characteristics,
• proper cooperation with the Mercedes vehicle's electrical system.

Thanks to its factory origin from the Mercedes brand, the correct mounting geometry and fitment to the drivetrain are maintained, which facilitates installation and reduces the risk of compatibility issues.

Application in OM642 Diesel engines

OM642 engines are advanced V6 diesel units where the starting system operates under significant load, especially in low temperatures and during frequent starts. A properly selected starter:

• supports quick engine startup,
• reduces battery wear thanks to proper current characteristics,
• ensures starting repeatability in typical road conditions.

In Mercedes vehicles with the OM642 engine, a properly functioning starter has a direct impact on user comfort, especially in intensively used fleet vehicles, commercial vehicles, or family SUVs.

Condition, verification, and installation

The offered starter is a used component, which in practice means a favorable compromise between purchase cost and maintaining factory design and fitment. Before installation, it is recommended to perform a standard check of the vehicle's electrical system (condition of the battery, ground cables, and power cables) to fully utilize the component's potential.

Professional installation by an experienced service center or a mechanic familiar with the specifics of Mercedes vehicles allows for reducing the risk of mechanical damage to mounting sockets and ensures proper tightening of bolted and electrical connections.

Starting system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional starters, mounting elements, or related starting system components, check the available parts in the Mercedes Starters category.

When working on the drivetrain, it is also worth expanding your knowledge regarding the selection of used components, their cost-effectiveness, and the principles of safe installation. An article describing when purchasing a used drivetrain element is a reasonable solution and what to pay attention to when choosing one may be helpful – you can find it here: Used gearbox – when is it worth it and what you need to remember.