Mercedes-Benz C E Class W203 W211 OM611 OM612 Mass Air Flow Sensor Meter

Mercedes-Benz C E Class W203 W211 OM611 OM612 Mass Air Flow Sensor Meter is a precision mass air flow sensor designed specifically for the intake systems of these engines. It is responsible for accurately measuring the amount of intake air, which allows the engine control unit to ensure stable operation, correct fuel dosing, and predictable power characteristics. This solution is intended for users who want to restore proper engine performance parameters without investing in a new component.

Specifications and technical data

• SKU: A6110940048
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6110940048
• Substitutable numbers: A6110940048, A 611 094 00 48, BG
• Category: Air Intake & Fuel Sensors

Function and application in OM611 / OM612 engines

The mass air flow sensor in the intake system of OM611 and OM612 engines measures the mass of air drawn in by the turbocharger and intake manifold. Based on this signal, the engine control unit adjusts the fuel dose, injection timing, and exhaust gas recirculation system operation, which translates into:

• smoother engine operation across the entire rev range,
• more efficient acceleration without jerking or power "gaps",
• stable idle speed,
• maintenance of the correct air-fuel mixture ratio under typical road conditions.

For Mercedes-Benz C-Class W203 and E-Class W211 models with OM611/OM612 diesel engines, using a dedicated mass air flow sensor is crucial for maintaining factory engine performance characteristics and proper interaction with the vehicle's electronics.

Benefits of using an original sensor in the Air and fuel intake sensors category

Components in the Air and fuel intake sensors category operate in a demanding environment – they are exposed to temperature fluctuations, vibrations, and contaminants from the intake system. Using an original mass air flow sensor designed for a specific engine configuration ensures:

• correct signal interpretation by the engine control unit without the need for adaptation,
• consistency with factory injection and boost map calibration,
• reduced risk of diagnostic errors related to the intake system,
• better parameter repeatability compared to generic aftermarket replacements.

This solution is particularly recommended for symptoms such as power loss, increased fuel consumption, or unstable engine operation in the low and mid-RPM range.

Product characteristics and condition

The offered mass air flow sensor is a dismantled part, which allows for an economical restoration of the intake system efficiency in Mercedes-Benz vehicles. A used sensor of this type is an attractive alternative to new parts, especially for older engine generations where reasonable repair costs are important while maintaining compatibility with factory equipment. Thanks to the preservation of the original housing design and electronics, installation is predictable for the mechanic, with no need for system modifications.

Selection by OEM numbers and compatibility

When selecting a mass air flow sensor for a Mercedes, it is crucial to match it by OEM number and interchangeable part numbers to ensure full compliance with the specific engine version and ECU software. In practice, this means:

• the possibility of direct replacement for a worn-out sensor,
• maintaining proper communication with the existing electrical harness,
• no need for interference with the control unit's operating parameters.

Before purchasing, it is worth comparing the markings on the dismantled part or using professional VIN verification to ensure that the selected mass air flow sensor will work properly with your specific vehicle.

Technical support and more on used electronics

If you want to better understand how to safely select and install used sensors and control modules in cars, it is worth checking out the Global Parts guide: Used automotive electronics on board – why choose second-hand ECU modules and sensors?. You will find practical tips on VIN/OEM selection, hardware and software compatibility, and the most frequently asked questions regarding installation.

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