Description
Warranty and technical condition of the part
The engine is sold with a 90-day warranty.
The power unit was tested before removal and is in full working order.
Listing details
The offer applies to a bare engine.
The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).
Mercedes W207 C207 E 350 CDI BlueEFFICIENCY Engine OM642.836 642836 WARRANTY is a used, complete engine block with cylinder heads designed for E-Class coupe and convertible models, serving as a solid foundation for professional powertrain repair. Thanks to its V6 diesel construction and the proven OM642 engine family, this engine block allows for a technically sound engine rebuild without the need to purchase full accessories. It is an ideal solution for users and workshops that expect factory compatibility with Mercedes while maintaining control over the further configuration of engine components.
Specifications and technical data
- SKU: A6420109397
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6420109397
- Substitutable numbers: A6420109397, A 642 010 93 97, A6420104604, A 642 010 46 04
- Fuel type: Diesel
- Number of cylinders: 6
- Category: Engines
- Engine code: 642836
- Mileage: 59 000
Purpose and compatibility with Mercedes W207 / C207 E350CDI
The offered engine block is dedicated to the powertrain of the Mercedes E-Class in W207 and C207 versions with the E350CDI diesel unit. The V6 engine design ensures proper block rigidity, as well as correct placement of oil and cooling channels according to factory Mercedes specifications. The engine code allows for unambiguous identification in service catalogs and matching to a specific vehicle configuration.
The engine belongs to the Engines category, meaning it is a central component of the powertrain, prepared for further assembly with accessories consistent with the requirements of a specific vehicle equipment version.
Technical construction and design parameters
The engine block includes the essential part of the power unit, i.e., the block with the cylinder system and cylinder heads, without additional accessories. The six-cylinder V-configuration ensures smooth operation, good refinement, and the appropriate torque potential characteristic of Mercedes diesel engines.
The unit was designed to work with a high-pressure injection system and a turbocharger, which in practice translates into a beneficial combination of flexibility and economy. The Diesel fuel type means the engine is optimized for high mileage, stable operation under load, and low fuel consumption on the road.
The declared mileage of the block allows for an assessment of the wear level of internal components and the planning of any necessary reconditioning work, such as checking bearings, cylinder bores, or seals. This allows the workshop to precisely tailor the scope of work to the expected level of reliability.
Practical application in repairs and upgrades
The engine in the form of a bare block is particularly useful in situations where there has been serious damage to the block or cylinder heads in the existing unit, while the accessories (turbo, injectors, pumps, manifolds) are still suitable for further use. This repair model allows you to:
- retain the vehicle’s original accessories and electrical installation,
- reduce replacement costs compared to a complete engine,
- choose an individual scope of reconditioning based on customer requirements,
- maintain compliance with factory Mercedes parameters.
For professional services and workshops specializing in the Mercedes brand, such a block provides a convenient base for building a unit for a specific project – from standard repairs to more advanced powertrain upgrades.
Benefits of choosing a used engine block
Choosing a used block from the OM642 family is a compromise between cost and functionality. You receive a component with factory geometry and fitment for Mercedes, which can be subjected to detailed verification and potential reconditioning before installation. The used condition allows for a significant reduction in the cost of the entire operation compared to a new unit, while maintaining high installation compatibility.
Additionally, the presence of the OEM part number and interchangeable numbers in the technical specification facilitates verification of compatibility with the specific vehicle VIN and manufacturer catalogs. This is important for both workshops and individual customers who want to ensure they are selecting the right component for their E350CDI unit.
Mercedes engines – expansion and selection of components
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 blocks, cylinder heads, or complete power units, check out the available parts in the Mercedes Engines category.
Substantive support and purchasing used components
When planning an engine replacement, it is worth knowing the typical design problems of various brands and models. For comparison with other manufacturers, you can read material describing critical units in a popular model from a competing brand – you will find it in the article Faulty BMW E90 engines – what can ruin your budget, which shows how important conscious engine selection is.
If you want to better understand how to safely buy components from the secondary market and what to pay attention to when choosing a used engine block, the guide Used parts – a guide to the best offers in an automotive store will be helpful, discussing practical rules for assessing technical condition and purchase profitability.






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