Mercedes W207 A207 C207 E350 BlueTEC Bare Engine 642.838 642838 69k, WARRANTY

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 A207 C207 E350 BlueTEC Bare Engine 642.838 642838 69k, WARRANTY is a used, complete block with cylinder heads, prepared as a base for a professional engine rebuild. A bare engine is the right choice when you need a solid foundation to transfer accessories from a damaged engine while maintaining factory performance characteristics and high driving refinement. By preserving the original V6 architecture, it serves as an attractive service solution for demanding Mercedes E-Class users.

Specifications and technical data

• SKU: A6420103709
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420103709
• Substitutable numbers: A6420103709, A 642 010 37 09, A6420109301, A 642 010 93 01
• Fuel type: Diesel
• Number of cylinders: 6
• Category: Engines
• Engine code: 642838
• Mileage: 69 000

Technical specifications of the engine block

The presented bare engine belongs to the Engines category and is designed for a V6 diesel unit. This configuration ensures smooth operation, good running refinement, and an adequate torque reserve, which is particularly important in heavier E-Class models.

The BlueTEC family engine has been designed for Diesel fuel operation, which translates into economical fuel consumption while maintaining appropriate dynamics. The use of six cylinders promotes smooth power delivery, and the modern design of this unit works well with the automatic transmissions used in the Mercedes W207, A207, and C207.

Application and compatibility

The bare engine is dedicated to Mercedes E-Class models in coupe and cabriolet body styles that use the E350 BlueTEC unit. In practice, this means you can use your existing accessories (turbo, injectors, manifolds, wiring harness, auxiliary equipment) from your damaged engine and transfer them to this block, allowing you to optimize repair costs while maintaining the vehicle's original specifications.

Thanks to the precisely selected engine code, it is possible to maintain full compatibility with factory control systems, injection maps, and the exhaust system. This is important for durability, proper operation of diagnostic systems, and avoiding the need for software modifications.

Condition, mileage, and operational potential

The unit comes from the secondary market, which allows for a favorable price-to-potential ratio for further operation. The declared mileage is relatively low for this class of diesel engine, which increases the potential for further service life after proper installation and maintenance.

The bare engine is particularly recommended in situations where there has been serious mechanical damage to the block or the crankshaft-piston system, while the accessories remain in a condition suitable for further use. Such a scenario allows for a rational restoration of a functional engine while keeping costs under control.

Benefits of choosing an original Mercedes engine

By choosing this engine, you gain:

• a base for repair consistent with Mercedes factory specifications,
• the ability to use existing accessories without the need for costly modifications,
• consistency with the vehicle's original control and diagnostic systems,
• a reasonable compromise between repair costs and solution durability.

For workshops specializing in the Mercedes brand, such an engine is a convenient starting point for a comprehensive engine rebuild, ensuring predictable labor time and repeatable quality.

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, heads, or complete engine units, check the available parts in the Mercedes Engines category.

Selection by numbers and additional materials

To correctly match the engine to a specific equipment version and model year, it is worth verifying compatibility using OEM numbers and the engine code in service documentation or the manufacturer's catalog. A practical guide describing how to safely buy powertrain components online and check their compatibility by numbers, available in the article Buying parts online without risk – verifying engines and components by OEM numbers, may be helpful.

If you are interested in a broader context of typical problems with engines in premium cars and want to compare the failure specifics of different designs, it is also worth reading the blog post BMW E90 faulty engines – a practical guide to problematic units, which shows how important proper selection and engine maintenance are in modern cars.