Mercedes-Benz Vaneo W414 E19 M166 166991 125HP Bare Engine 166.991 65k, 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-Benz Vaneo W414 E19 M166 166991 125HP Bare Engine is a proposal for users looking for a proven powertrain unit for professional repair or replacement within the drivetrain system. The offered component comes from the Engines category and provides a solid base for further assembly of accessories according to the requirements of a specific vehicle configuration. Thanks to the preservation of the factory design specifications, this is a beneficial solution for both workshops and conscious individual users.

Specifications and technical data

• SKU: A1660104902
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1660104902
• Substitutable numbers: A1660104902, A 166 010 49 02
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the M166 unit

The presented engine is a four-cylinder, inline petrol unit from the M166 family, used in the Mercedes-Benz Vaneo W414 model in the E19 version with 125 HP. The design based on four cylinders promotes balanced operation while ensuring good performance under typical operating conditions – from city driving to extra-urban routes. The use of petrol fuel injection allows for precise control of the combustion process, which translates into predictable torque characteristics and flexibility in everyday use.

The bare engine unit is intended for further completion with accessories according to the requirements of a specific vehicle. This format facilitates adaptation in cars where some auxiliary components (e.g., intake system, exhaust system, or electrical equipment) remain in the vehicle and are reused. This makes it possible to precisely match the configuration to the existing installation without interfering with the factory architecture of the drivetrain.

Application in the Mercedes-Benz Vaneo W414

The M166 125 HP petrol engine was designed for compact city and family models, such as the Mercedes-Benz Vaneo W414. The operating characteristics of this unit fit well into the profile of a multi-purpose vehicle – it provides adequate dynamics while maintaining reasonable fuel consumption and a predictable response to load. Thanks to the factory fitment for the Vaneo body, installation is carried out based on original mounting points and standard design solutions.

The offered bare engine is particularly useful in situations where the existing unit has suffered serious mechanical or thermal damage and repair is no longer economically justified. Replacing the complete block with the cylinder head allows for restoring the full functionality of the vehicle while maintaining the manufacturer's original specifications, which is important for both durability and subsequent service diagnostics.

Benefits of choosing a used bare engine

Choosing a used engine from the M166 family for the Vaneo W414 is a solution that allows you to optimize repair costs while maintaining a design consistent with factory assumptions. The four-cylinder petrol unit is well-known in the service environment, which facilitates maintenance, adjustments, and any potential further repair work. The availability of technical documentation and the experience of workshops with this type of engine promote efficient installation.

The bare engine also provides greater flexibility in terms of using existing accessories from the damaged unit, which helps limit the number of new components required to complete the repair. For the user, this means the ability to restore vehicle performance while keeping the budget under control, and for the workshop – a clear scope of work and easier planning of the assembly process.

Selection and compatibility verification

To correctly select this engine for a specific Vaneo unit, it is crucial to verify the compatibility of the powertrain with the M166 designation in the 125 HP version and match it to the body configuration and accessories. It is recommended to use vehicle identification numbers and data from service documentation, which minimizes the risk of incompatibility. In case of doubt, it is worth consulting a workshop specializing in the Mercedes brand, which will confirm compatibility before starting the installation.

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 the available parts in the Mercedes Engines category.

Substantive support and knowledge about powertrain units

When planning major work on the drivetrain, it is worth expanding your knowledge about typical problems and costs associated with various engine designs. A good point of reference can be the analysis of other popular models – for example, for the BMW E90, a detailed overview of the most problematic units, their weak points, and potential repair costs has been prepared. To better understand how the right engine choice affects your service budget, read the article Emergency BMW E90 engines: check what can ruin your budget!.