Turbocharger Mercedes W169 W245 OM640 Diesel Complete Turbo A6400901580

The Mercedes W169 W245 OM640 Turbocharger is an original equipment turbocharger from the Turbochargers & Parts segment, designed for Mercedes OM640 diesel engines in the A-Class (W169) and B-Class (W245) models. This OEM component ensures a factory fit to the intake and exhaust systems, making installation easier and reducing the risk of compatibility issues.

Specifications and technical data

• SKU: A6400902680
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400902680
• Substitutable numbers: A 640 090 16 80, A6400901680, A6400902680, A 640 090 26 80, A6400901580, A 640 090 15 80, A 640 090 25 80, A6400902580, KD
• Fuel type: Diesel
• Category: Turbos & Parts

Intended use and compatibility with the OM640 engine

This turbocharger is designed to work with the OM640 engine in the Mercedes A-Class W169 and B-Class W245 diesel- powered vehicles. OEM design ensures the original mounting points, proper housing geometry, and proper fit to the exhaust manifold and intake tracts.

Matching a turbocharger to a specific engine version is crucial for the proper operation of the supercharging system. Original manufacturer markings and available interchangeable numbers allow for verification of compatibility with a specific vehicle configuration, minimizing the risk of incorrect part selection.

Technical characteristics of the turbocharger

As a component designed for a diesel engine, the turbocharger operates under demanding thermal and pressure conditions. Its design ensures:

• stable boost across the entire engine speed range,
• appropriately selected compression characteristics for the OM640 unit,
• proper cooperation with the factory engine control and diesel injection system.

By maintaining the original operating parameters, the turbocharger supports proper performance, engine operation and correct fuel consumption values, which translates into predictable vehicle behavior and stable operating conditions.

Condition, origin and benefits of choosing a used turbocharger

The turbocharger offered is a used part, sourced from a disassembly. This type of component represents a reasonable compromise between repair costs and maintaining the original build quality characteristic of the Mercedes brand. Compared to replacements of unknown origin, the OEM part provides:

• factory fit to the exhaust and intake system,
• compatibility with original engine mounts and accessories,
• maintaining the operating parameters of the charging system provided by the manufacturer.

Before installation, it is recommended to carry out a standard verification of the technical condition by an experienced service center, check the rotor clearances, tightness and cleanliness of the oil channels, as well as properly prepare the lubrication and intake system (change of oil, filters, inspection of hoses).

Application in the drive system and operation

In diesel engines, the turbocharger is crucial for achieving adequate torque and combustion efficiency. In the case of the OM640 engine, a properly selected turbocharger:

• supports dynamic acceleration in the low and medium rev range,
• allows you to maintain stable operating parameters under highway load,
• affects the combustion efficiency of the mixture, which may translate into fuel consumption.

During operation, it is worth paying attention to regular oil changes, using filters of appropriate quality and avoiding sudden engine shutdown after intensive driving, which contributes to a longer service life of the turbocharger.

Other Mercedes turbochargers and technical knowledge

If you're looking for other turbochargers for Mercedes, check out our dedicated category: Mercedes Turbochargers . There you'll find a wide selection of OEM and used parts, suitable for various models and generations of diesel and petrol engines.

When planning driveline repairs—especially in vehicles with higher mileage—it's worth expanding your knowledge of other components, such as differentials and drive axles. Our guide, "Second-Hand Differentials – What You Should Know About Used Differentials, Sensors, and Drivetrains ," may be helpful. We discuss practical rules for assessing the condition of used components and making informed part selection.