Mercedes W169 A180 W245 B180 CDI OM640 640940 Complete Engine 640.940 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 W169 A180 W245 B180 CDI OM640 640940 Complete Engine 640.940 WARRANTY is a complete powertrain unit from the Mercedes diesel engine family, designed for A-Class and B-Class models. Thanks to its proven four-cylinder design and economical diesel cycle operation, it provides a solid foundation for professional repair or replacement of the powertrain in your vehicle. This is an offer for users looking for a proven diesel engine with predictable performance parameters and good operating refinement.

Specifications and technical data

• SKU: A6400101144-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400101144
• Substitutable numbers: A6400101144, A 6400101144, A 640 010 11 44, A6400101102, A 640 010 11 02
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Engine technical characteristics

The presented engine belongs to the Engines category and was designed as a four-cylinder diesel unit, optimized for economical yet dynamic driving. The four-cylinder layout ensures balanced mechanical loads, good operating refinement, and predictable behavior under load, which is important in both city and highway driving.

The diesel unit in this Mercedes model was constructed for stable operation across a wide range of engine speeds. The engine works well with factory fuel injection systems and accessories used in the A-Class and B-Class, which facilitates integration with the vehicle's existing installation. The use of diesel technology allows for favorable fuel consumption while maintaining adequate flexibility and torque.

Application in Mercedes A-Class and B-Class

The engine is intended for installation in Mercedes W169 A180 and Mercedes W245 B180 CDI models, making it a perfect fit for the engine bay architecture of these vehicles. This means correct mounting points, compatibility with factory wiring harnesses, and alignment with standard cooling and intake systems.

Such structural fit translates into:

• easier installation in place of a worn or damaged unit,
• preservation of the factory powertrain geometry,
• proper cooperation with the vehicle's standard control electronics.

As a result, the engine represents a practical solution both for standard unit replacement and for more extensive powertrain repairs in these Mercedes models.

Operational parameters and condition

The unit comes from a vehicle operated under road conditions, which allows for an assessment of its performance under real loads. The engine mileage indicates a moderate degree of wear in the context of a diesel design, which is engineered for long-term operation. Such engines, with proper maintenance, maintain stable performance parameters for a long time.

The engine is offered as a used component, which in practice means a favorable cost-to-potential-service-life ratio. For workshops and individual users, this is an attractive alternative to expensive overhauls or purchasing a brand-new unit.

Benefits of choosing this powertrain unit

Choosing this powertrain unit for a Mercedes A-Class or B-Class allows for consistency with the vehicle's factory specifications. Original Mercedes design ensures predictable car behavior, no need for adapting non-standard solutions, and easier diagnostics in the future. This is particularly important for workshops that want to reduce installation time and the risk of compatibility issues.

An additional advantage is the ability to use existing service infrastructure – mechanics familiar with these Mercedes models have experience working with this engine family, which facilitates both installation and subsequent inspections. For the end user, this translates into more predictable maintenance costs and greater confidence in the vehicle's operation after repair.

Mercedes engines – further development and technical knowledge

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, cylinder heads, or complete long blocks, check the available parts in the Mercedes Engines category.

To compare the characteristics of powertrain units from other brands and better understand typical operational problems, it is worth reading the guide material on popular competing models, such as the article on BMW E90 engine failures. This will allow you to better evaluate how the solutions used in Mercedes engines compare to the market and consciously approach the choice of the right unit for your car.