Mercedes-Benz W168 A140 E14 M166 166940 82HP Bare Engine 166.940 95k m, WARRANTY

Mercedes-Benz W168 A140 E14 M166 166940 82HP Bare Engine is a short block designed for professional engine replacement in the A-Class W168 series. It features a four-cylinder gasoline construction, which ensures smooth, predictable performance and good driving refinement for daily use. Thanks to its verified mileage and factory specifications, it serves as a solid foundation for repairing or rebuilding the powertrain.

Specifications and technical data

• SKU: A1660101700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1660101700
• Substitutable numbers: A1660101700, A 1660101700, A 166 010 17 00
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the engine

The presented M166 engine short block is a four-cylinder inline gasoline unit, designed for urban and suburban operation. This configuration provides a good balance between flexibility and economy, as well as simpler maintenance compared to more complex designs.

As a bare engine, it serves as an ideal base for transferring accessories from the previous unit – a solution often chosen by workshops that want to retain the vehicle's original equipment while replacing the mechanical core itself.

Application and benefits of installation

The gasoline engine used in the Mercedes A-Class W168 A140 is a popular choice for post-accident repairs, or after the seizure or major failure of the previous unit. By maintaining the vehicle's original specifications, it facilitates:

• maintaining the factory performance characteristics of the powertrain,
• ensuring compatibility with existing electronics and accessories,
• reducing costs compared to a full overhaul of an old engine.

The bare engine allows for flexible use of existing components, which is particularly beneficial for experienced mechanics and workshops specializing in the Mercedes brand.

Condition and suitability for professional repairs

The unit comes from a vehicle operated under typical road conditions, and its mileage is conducive to further use after proper installation and basic service. The engine is suitable for both individual repairs and workshop applications, where consistency and predictable results are essential.

For workshops specializing in Mercedes vehicles, such a short block is a valuable component that helps reduce repair time compared to a full rebuild of a damaged unit. After transferring the accessories and performing standard inspection procedures, it can become a reliable heart of the vehicle for years to come.

Mercedes engines – expansion and powertrain modernization

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

Knowledge and support in choosing a used engine

When selecting a used powertrain, it is worth knowing the typical design issues and differences between individual engine series. A good point of reference is the analysis of failure rates in popular models – for example, in the case of the BMW 3 Series E90, many units have characteristic weak points that significantly affect operating costs. To better understand what to look for when buying a used engine and how to avoid the most problematic solutions, read the article Faulty BMW E90 engines: check what can ruin your budget!.

If you would like to learn more about choosing used components for various makes and models, a practical guide to the secondary market will also be helpful – it includes a discussion of the most frequently chosen parts and tips on how to evaluate their cost-effectiveness and durability: Best used car parts – a guide to the most frequently chosen original parts.