Mercedes ML W166 GL X166 C292 350 Bare Engine 642.826 642826 79k miles, 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 ML W166 GL X166 C292 350 Bare Engine 642.826 642826 79k miles, WARRANTY is a used, factory-spec engine block from the Mercedes diesel engine family, designed for SUV and coupe class models. The bare engine serves as a solid foundation for a professional powertrain rebuild, allowing for the transfer of accessories from an existing unit while maintaining compatibility with the factory drivetrain architecture. This is a solution for users and workshops looking for a technically matched component at optimal costs.

Specifications and technical data

• SKU: A6420107107
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420107107
• Substitutable numbers: A6420107107, A 642 010 71 07, A6420101908, A 642 010 19 08, A6420107707, A 642 010 77 07, A6420107407, A 642 010 74 07
• Fuel type: Diesel
• Number of cylinders: 6
• Category: Engines
• Engine code: 642826
• Mileage: 79 000

Technical characteristics of the engine block

The presented engine block belongs to the Engines category and is intended for Mercedes vehicles from the ML, GL, and C-Class coupe families. The unit belongs to a modern generation of diesel engines, which translates into favorable performance parameters, smooth operation, and the ability to work with advanced engine management systems.

The engine is a V6 configuration, which provides adequate torque reserve, smooth power delivery, and stable operation across the entire rev range. The use of diesel fuel allows for a good compromise between dynamics and fuel consumption, which is particularly important in heavier SUV segment vehicles.

Scope of delivery – bare engine

Bare engine means that the offer includes the main block with the cylinder assembly and basic internal components, without full external accessories. This configuration is particularly beneficial for workshops and users who plan to:

• transfer accessories from their existing unit (e.g., fuel system, turbocharging, manifolds),
• build a complete engine based on components they already possess,
• optimize repair costs by utilizing functional parts from a damaged engine.

Thanks to this solution, it is possible to precisely match the configuration to a specific vehicle while maintaining compatibility with the factory engine control unit and wiring.

Application and vehicle matching

The engine block is intended for Mercedes ML, GL, and C-Class coupe vehicles in 350 diesel variants. It is crucial to match the unit to the specific equipment version and production year of the vehicle, taking into account the engine code and OEM part number. In practice, selection is most often based on the VIN and a comparison of catalog data, which minimizes the risk of mechanical or electronic incompatibility.

The V6 unit works well with both automatic and modern transmissions, providing adequate flexibility under higher loads typical for premium SUV and coupe vehicles.

Condition, mileage, and benefits of buying a used engine

The offered engine block is a used item, which allows for a significant reduction in repair costs compared to a brand-new unit. The declared mileage of the engine is relatively low for this class of construction, which, combined with proper operation and further maintenance, can translate into long and stable performance after installation.

Purchasing a used engine block is particularly beneficial when:

• the existing unit has suffered major mechanical damage (e.g., seizure, cracked block),
• a major overhaul of the old engine is economically unjustified,
• the workshop has functional accessories and wants to transfer them to a different base.

With proper selection and installation, one can achieve a favorable cost-to-durability ratio while maintaining the factory performance characteristics of the powertrain.

Installation recommendations and technical support

Before installation, it is recommended to perform standard preparatory steps, such as checking for leaks, verifying the condition of internal components accessible after removing accessories, and replacing consumables in accordance with the vehicle manufacturer's procedures. Professional installation in a specialized workshop limits the risk of subsequent failures and ensures proper cooperation with the control system.

For users and workshops that want to take a conscious approach to powertrain regeneration and compare the cost-effectiveness of buying a used engine versus other solutions, the following expert guide will be useful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article discusses, among other things, VIN and OEM selection procedures, common myths, and real cost proportions.

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 engine blocks, complete units, or other diesel powertrain configurations, check the available parts in the Mercedes Engines category.