Mercedes Vito Viano W639 120 CDI Complete Engine OM642 642990 642.990 WARRANTY

Description

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 Vito Viano W639 120 CDI Complete Engine OM642 642990 642.990 WARRANTY is a used power unit from the Engines category, designed for demanding users who expect a proven service solution. Thanks to its preserved factory characteristics and parameters suitable for both commercial and passenger vehicles, this engine provides a solid foundation for professional repair or replacement in your Mercedes. It is a practical choice for workshops and individual users looking for a technically compatible component.

Specifications and technical data

• SKU: A6420107345-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420107345
• Substitutable numbers: A6420107345, A 642 010 73 45
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 119 000

Technical characteristics of the unit

The presented engine belongs to the Diesel group of power units, which translates into economical operation and stable performance characteristics under typical usage conditions for Vito and Viano models. The configuration based on six cylinders (V6) provides a favorable compromise between refinement, fuel consumption, and load-bearing capabilities, which are essential in commercial and family vehicles.

The engine has been designed for long-term operation in varied conditions – from city driving to highway travel. The diesel architecture promotes good torque in the low and medium RPM range, which facilitates starting under load and smooth acceleration.

Purpose and application in Mercedes Vito / Viano

The unit is dedicated to Mercedes Vito and Mercedes Viano W639 generation vehicles in the 120 CDI version, meaning it was constructed to meet the specific requirements of these models. This makes it possible to maintain the proper driving characteristics, appropriate acceleration, and predictable vehicle behavior under load.

This series of engines performs well in both fleet applications and private cars, where parameter repeatability, predictable service maintenance, and integration with the existing vehicle installation are important. It is a solution that allows you to restore the full functionality of the car without the need for costly conversion to a different unit.

Condition, mileage, and benefits of choosing a used engine

The offered unit is used, which represents an attractive cost alternative to new components while maintaining functionality suitable for further operation. The declared mileage allows for an assessment of wear in the context of the typical life cycle of diesel engines used in vehicles of this class.

Choosing a used engine with documented mileage is a solution that often allows for a significant reduction in repair costs while maintaining compliance with the vehicle’s factory specifications. For workshops, this means the ability to offer the customer a cost-effective service, and for the end-user – a faster return of the car to full operational status.

Why choose this Mercedes engine

Diesel engines used in the Mercedes Vito and Viano are valued for their durability and stable performance over long periods of use. The V6 version provides a good balance between performance and operating costs, which is significant in both commercial and private applications.

• consistency with the factory configuration of the Mercedes Vito / Viano W639,
• favorable ratio of purchase cost to potential operational mileage,
• characteristics suitable for work in commercial and family vehicles,
• possibility of use in professional workshop repairs.

Mercedes engines – expansion and modernization of the powertrain

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 complete power units, check out the available parts in the Mercedes Engines category.

Technical knowledge and operation of power units

When selecting a used engine, it is worth knowing the typical problems and weak points of specific designs to consciously plan service and any preventive actions. Material describing critical units in other popular models may be helpful – a good example is the article on faulty units in the E90 series, which shows how analyzing typical faults helps limit the risk of costly repairs. More information can be found in the guide Faulty BMW E90 engines: check what can ruin your budget!.

Additionally, in the context of the longevity of any power unit, an efficient cooling system is of key importance. It is worth familiarizing yourself with practical tips regarding overheating, diagnostics, and repairs, described in the article Engine cooling system – overheating, repair, and used radiators, to better take care of the newly installed engine in your Mercedes.