Mercedes-Benz W169 A170 W245 B170 E17 266940 Complete Engine 266.940 WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Mercedes-Benz W169 A170 W245 B170 266940 Complete Engine 266.940 WARRANTY is an original power unit from the Engines category, designed for Mercedes compact class models. This used petrol engine is a practical solution for repairs, allowing you to maintain the factory performance characteristics and compatibility with the vehicle's electronics.

Specifications and technical data

• SKU: A2660100300-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2660100300
• Substitutable numbers: A2660100300, A 266 010 03 00, A2660107800, A 266 010 78 00
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 54 000

Technical characteristics of the unit

The presented engine belongs to the family of four-cylinder petrol units used in A-Class and B-Class models. The cylinder layout ensures balanced operation, good refinement, and predictable torque characteristics, which translates into stable vehicle performance in both urban and extra-urban driving conditions.

The engine was designed for efficient fuel combustion and proper integration with factory Mercedes equipment and control units. The design of this unit is well-known to workshops specializing in the brand, which facilitates diagnostics, service, and any necessary adjustment work.

Application in Mercedes W169 A170 and W245 B170 models

This power unit is dedicated to compact Mercedes A-Class (W169 A170) and B-Class (W245 B170) models, where a combination of body functionality and appropriate dynamics is essential. Installing the correct engine from the same family allows for maintaining the factory parameters of the drivetrain without the need for modifications to the electrical or mechanical systems.

Thanks to maintaining structural compliance with the manufacturer's original design, the engine works well with the factory gearbox, cooling system, and safety systems. This solution is particularly beneficial for post-accident repairs or engine replacement after a failure, when the priority is to quickly restore the vehicle to full efficiency.

Benefits of choosing a used petrol engine

Choosing a used petrol engine for a Mercedes A-Class or B-Class is often an optimal compromise between repair costs and maintaining the vehicle's original specifications. A unit from the same engine family reduces the risk of compatibility issues and also facilitates the configuration of the engine control unit and onboard systems.

The four-cylinder engine provides:

• consistent performance characteristics with the factory drivetrain,
• good availability of service and maintenance parts,
• easier handling in workshops familiar with Mercedes designs.

Additionally, maintaining the original fuel type avoids costly modifications to the installation and exhaust system, which is important for both durability and compliance with regulations.

Professional verification of compatibility by numbers

Before purchasing an engine for a Mercedes, it is worth verifying the unit's compatibility with the specific body version and vehicle year using OEM numbers and interchangeable numbers. This approach minimizes the risk of equipment mismatch, differences in mounts, or different versions of accessories used in a given model year.

If you want to organize the component selection process and learn practical methods for checking compatibility by numbers, our guide on online shopping will be helpful: proven methods for verifying parts by OEM numbers. You will find tips there regarding the selection of components for Mercedes, which will facilitate making an informed purchasing decision.

Engines and the risk of failure – knowledge useful when buying

When choosing a used engine, it is worth knowing the typical design problems occurring in various brands and models to better assess the condition of the unit and potential costs of further operation. Analyzing failure cases from other popular models allows for drawing conclusions regarding the importance of regular service, oil quality, or the method of operation.

For comparison, you can read an article describing sensitive units in another market segment: faulty BMW E90 engines and their typical problems. Although it concerns a different brand, it shows how important a conscious approach to choosing a used engine is and how much impact potential service neglect has on the budget.

Mercedes engines – selection of other elements from this group

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other elements from the same group, such as other blocks, cylinder heads, or complete power units, check the available parts in the Mercedes Engines category.

Summary

Mercedes-Benz W169 A170 W245 B170 266940 Complete Engine 266.940 WARRANTY is a practical proposal for users and workshops looking for an original petrol unit for compact Mercedes models. Using an engine from the same family allows you to maintain the consistency of the drivetrain, reduce the risk of compatibility issues, and streamline the installation process. This is a particularly beneficial solution for repairs where both technical correctness and cost control are important.