Mercedes W204 W207 W639 W906 Air Flow Mass Meter Sensor A6510900148

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W204 W207 W639 W906 Air Flow Mass Meter Sensor is a precision intake system component responsible for accurately measuring the amount of air intake in Mercedes engines. A properly selected mass air flow sensor helps maintain stable engine operation, correct fuel dosage, and predictable performance. This item from the Air and fuel intake sensors category is a solution for users who want to restore correct engine performance parameters without investing in a new part.

Specifications and technical data

• SKU: A6510900148-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510900148
• Substitutable numbers: A6510900148, A 651 090 01 48
• Category: Air Intake & Fuel Sensors

The role of the mass air flow sensor in Mercedes engines

The mass air flow sensor in Mercedes W204, W207, W639, and W906 models is responsible for continuously measuring the amount of air supplied to the cylinders. Based on this data, the engine control unit determines the fuel dosage, injection timing, and auxiliary equipment operating strategy. A functional sensor translates into:

• stable idle speed and smooth acceleration,
• more predictable throttle response,
• reduction of exhaust smoke and misfires,
• maintenance of factory combustion parameters.

For Mercedes diesel and gasoline engines, a correct air mass reading is crucial for the operation of the injection system and exhaust gas treatment systems.

Compatibility with W204, W207, W639, W906 platforms

The offered mass air flow sensor has been designed for popular Mercedes C-Class, E-Class, Vito/Viano, and Sprinter models based on the W204, W207, W639, and W906 platforms. As a result, it provides a solution for a wide range of body styles – from passenger cars and delivery vehicles to commercial versions.

Selecting the correct sensor is facilitated by the presence of a dedicated OEM part number and associated interchangeable numbers, which minimizes the risk of error when matching it to a specific engine version. In practice, this means the component can be used as a replacement for the factory-installed sensor without the need for any system modifications.

Characteristics of the used component

The presented mass air flow sensor is a used part, which allows for lower repair costs compared to a new OEM component. This type of solution is particularly attractive for heavily used fleet vehicles, delivery vans, or older models where a reasonable price-to-functionality ratio is a priority.

When choosing a used sensor from the Air and fuel intake sensors category, it is worth paying attention to the part number compatibility and the origin history of the item. A properly selected sensor allows you to restore correct engine performance parameters without interfering with the electrical wiring or the intake system.

Benefits of using an original Mercedes mass air flow sensor

Using an original Mercedes component ensures proper fitment with the air filter housing, intake hose diameters, and electrical connectors. In practice, this translates into:

• secure mounting in factory installation points,
• proper sealing of the intake system,
• compatibility with engine control unit software,
• reduced risk of diagnostic errors related to incorrect sensor signals.

For workshops and individual users, this means faster installation and fewer potential problems after replacing the component.

Choosing used electronics and sensors – practical tips

When selecting a used mass air flow sensor, it is worth being guided not only by price but also by the compatibility of markings and its intended use for a specific engine family. General principles for selecting automotive electronics – from engine control units and comfort modules to sensors – can also be helpful.

If you want to better understand when used electronic components are a reasonable choice and what to look for when purchasing them, check out our guide: The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other items from the same group, such as boost pressure sensors, air temperature sensors, or fuel measurement components, check out the available parts in the Mercedes air and fuel intake sensors category.