Mercedes W639 W906 Turbocharger Diesel Engine OM651 Turbo Charger A6510900186

The Mercedes W639 W906 OM651 Diesel Engine Turbocharger A6510900186 is an original turbocharger from the Turbochargers & Parts category, designed for Mercedes vehicles with the OM651 diesel engine. This used OEM component is a good solution for drivers who want to restore the proper dynamics of the engine while maintaining factory operating characteristics.

Specifications and technical data

• SKU: A6510900186-1
• 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 compatibility

This turbocharger is designed for Mercedes W639 and W906 models equipped with the OM651 diesel engine. Using the original component allows for maintaining proper boost parameters, which translates into stable engine operation, correct gas response, and predictable injection system loads.

By maintaining the factory design, the turbocharger works with the stock engine components, intake, and exhaust systems, without the need for structural modifications. This solution is particularly beneficial for service repairs, where repeatability and compliance with manufacturer documentation are key.

Technical characteristics and construction

The turbocharger was designed specifically for diesel engine requirements, including carefully selected rotor geometry, hot and cold side housings, and operating parameters adapted to the high pressures and temperatures typical of diesel engines. This unique design ensures:

• stable boost pressure across the full engine speed range,
• correct cooperation with the engine control system, including injection and boost maps,
• appropriate torque characteristics at low and medium revs, important in commercial and delivery vehicles.

The OEM design is optimized for durability and resistance to long-term loads, which is important in fleet operation and intensive vehicle use.

Condition, origin and advantages of a used turbocharger

The turbocharger offered is in used condition, which significantly reduces repair costs compared to a new component while maintaining the original manufacturer's specifications. For many users, this represents a favorable compromise between price and quality, especially in vehicles subject to intensive use where a quick return to full performance is essential.

Choosing a used OEM component also means:

• saving service costs while maintaining the factory design,
• better fit than many low-cost substitutes,
• reducing waste by reusing original components.

Benefits of installation in the OM651 diesel engine

The OM651 diesel engine is a modern unit that requires a precisely matched turbocharging system. Using the right turbocharger allows for:

• maintain proper vehicle performance and flexibility across the full load range,
• maintain stable combustion parameters, which helps maintain appropriate fuel consumption,
• reduce the risk of excessive load on other components, such as the injection system or the particulate filter.

For workshops and services specializing in the Mercedes brand, the use of the original turbocharger for the OM651 facilitates diagnostics, calibration and subsequent service.

Other Mercedes turbochargers and used parts knowledge

If you are looking for other turbochargers for Mercedes, check out our dedicated turbochargers for Mercedes category, where you will find a wide selection of solutions tailored to various models and engine versions of this brand.

When planning a repair, it's also worth checking out our guide, which discusses how to wisely use the used parts market and where to find real savings. Read the article "Rising Repair Costs and the Used Parts Boom – How to Save on Car Service?" to better plan your service budget and consciously choose pre-owned OEM components.