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 W204 C 320 350 CDI Bare Engine 642960 642.960 224HP 99k miles, WARRANTY is a used, complete block with cylinder heads, designed for the professional rebuilding of the powertrain in C-Class models with a V6 diesel engine. This is a solution for workshops and users who want to restore the vehicle’s performance while maintaining the original design of the V6 diesel engine and its operating characteristics. The bare engine serves as a solid base for further assembly of accessories in accordance with the manufacturer’s requirements.
Specifications and technical data
- SKU: A6420109247
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6420109247
- Substitutable numbers: A6420109247, A 642 010 92 47
- Fuel type: Diesel
- Number of cylinders: 6
- Category: Engines
- Engine code: 642960
- Mileage: 99 000
Technical characteristics of the engine
The presented engine belongs to the Engines category and represents a family of modern V6 diesel units used in Mercedes passenger cars. The V-configuration of the cylinders ensures a compact design, favorable weight distribution, and high refinement, which translates into driving comfort and vehicle stability. The use of diesel fuel allows for high torque with relatively low fuel consumption, which is particularly important in upper-mid-range vehicles.
The engine has been designed to operate under heavy loads, typical for dynamic highway driving and long-distance operation. The number of cylinders and the block construction promote smooth power delivery as well as stable operation across a wide rev range. As a result, the unit works well with both automatic and manual transmissions, maintaining appropriate flexibility.
Scope of application and purpose
Mercedes W204 C 320 350 CDI Bare Engine 642960 642.960 224HP 99k miles, WARRANTY is intended primarily for use in W204 generation C-Class models with 3.0 V6 CDI units. The bare engine serves as a base for transferring accessories from the previously used engine, which allows for optimizing repair costs while maintaining compliance with factory specifications. This type of solution is particularly beneficial in situations where there has been mechanical damage to the block or the crankshaft system, while the remaining accessories are still suitable for further use.
The unit will prove effective both in professional service centers specializing in the Mercedes brand and in independent workshops dealing with diesel engine repairs. The used engine allows for a comprehensive powertrain rebuild, with the possibility of further regeneration of cooperating components, such as the fuel injection system or turbocharging, in accordance with an individual service strategy.
Benefits of using a bare engine
Choosing a bare engine instead of a complete powertrain unit offers a number of practical service benefits. It allows for the use of existing accessories that are already matched to the specific vehicle configuration, which facilitates installation and reduces the risk of compatibility issues. For workshops, this means greater control over the scope of work and the possibility of staged regeneration of individual components.
The most important advantages of this solution include:
- the ability to retain the original accessories and vehicle installation,
- flexible planning of the scope of repair and budget,
- maintaining the factory operating characteristics of the V6 diesel engine,
- better control over the quality of the associated parts used.
Additionally, a used engine allows for an assessment of the unit’s condition at the assembly stage and the potential execution of additional preventive work, which can extend the period of trouble-free operation after the repair.
Condition, mileage, and service aspects
The engine is offered as a used item, which in practice means that before installation, it is worth performing standard inspection and preparatory activities typical for professional regeneration. The declared mileage of the unit allows for an assessment of its potential for further operation; however, the final decision regarding the scope of work (e.g., replacing seals, checking heads, measuring compression) should be made by the workshop based on inspection and measurements.
With proper installation preparation and the use of appropriate consumables, such as oil with the correct specification and high-quality filtration, this type of engine can continue to provide stable operating parameters. For the user, this means a chance to restore the full functionality of the vehicle while maintaining the original design of the powertrain.
Mercedes engines – selection and additional information
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 powertrain units, check out the available parts in the Mercedes Engines category.
For those who want to better understand the specifics of modern diesel units and avoid costly mistakes during purchase or regeneration, a guide describing typical problems with powertrain units in popular models may be helpful. It is worth reading the material: Faulty BMW E90 engines: check what can ruin your budget!, which shows how a conscious approach to engine selection affects later operating costs.
If you are interested in a broader context of operating and refreshing V6 CDI units, including issues related to the fuel injection system and turbocharger, it is also worth reaching for the article The second life of the Mercedes OM642 engine – how injectors and a turbine restore the power of the 3.0 V6 CDI, which discusses a practical approach to restoring the efficiency of engines in this family.
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