Mercedes W639 W906 Turbocharger Diesel Engine OM651 Turbo Charger A6510900186

The Mercedes W639 W906 OM651 Turbo Diesel Turbocharger A6510900186 is an original turbocharger from the Turbochargers & Parts segment, designed for Mercedes OM651 diesel engines. This used OEM component is a sensible choice for drivers who want to restore proper boost while maintaining the engine's factory operating parameters.

Specifications and technical data

• SKU: A6510900186
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510900186
• Substitutable numbers: A6510900186, A 651 090 01 86
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and technical characteristics

The presented turbocharger is designed to work with the OM651 diesel engine, used in Mercedes van and passenger van models such as the W639 and W906. The OEM design ensures proper boost pressure, appropriate torque characteristics, and stable operation across the full load range, which is crucial in vehicles used both in city traffic and fleet applications.

As part of the turbocharging system, the turbocharger is responsible for increasing the amount of air delivered to the cylinders, which translates into better combustion efficiency, higher power, and improved engine flexibility. Using a dedicated OEM unit allows for compatibility with the factory engine control unit software and injection system.

Benefits of using an original Mercedes turbocharger

Choosing a used OEM turbocharger for your Mercedes diesel engine offers a number of practical advantages:

• Factory fit – compatible with OM651 engine mounts, oil and intake lines and accessories, no modifications required.
• Stable operating parameters – maintaining the charging characteristics provided by the manufacturer, which reduces the risk of overcharging or power loss.
• Consistency with the control system – correct cooperation with sensors, control valves and injection maps in Mercedes diesel units.
• Savings compared to a new part – a used OEM part allows for a significant reduction in repair costs while maintaining the appropriate level of quality.

Condition, installation and service recommendations

The turbocharger is offered as a used part, which represents a compromise between cost and maintaining the original manufacturer's specifications. Before installation, standard maintenance is recommended, such as checking the lubrication system, oil and intake lines, and the tightness of the intake and exhaust systems to ensure the turbine is in proper operating condition.

When replacing a turbocharger in a diesel engine, it is worth paying attention to:

• engine oil cleanliness and oil filter condition,
• no contamination in the intake ducts,
• correct bleeding of the lubrication system after assembly,
• checking for possible leaks in the vacuum and boost control system.

This approach reduces the risk of premature wear and allows the full potential of the turbocharger used in the diesel engine to be fully utilized.

Mercedes turbochargers – selection and alternatives

If you're looking for other turbochargers designed for Mercedes vehicles, check out our Mercedes turbochargers category, where you'll find a wide selection of OEM and aftermarket units for various models and engine versions. This allows you to easily match the component to your specific vehicle configuration, taking into account fuel type and engine generation.

How to save on supercharging system repairs?

Rising service costs are making used OEM components, such as diesel turbochargers, an attractive alternative to new parts. To better understand when it's worth investing in a used turbocharger and how to do it wisely, check out our guide: Rising Repair Costs and the Used Parts Boom – How to Save on Car Service? . You'll find practical tips on how to safely reduce repair costs without sacrificing component quality.