MAF Mercedes W211 W164 W221 Diesel OM629 Mass Air Flow Sensor A6290900248

MAF Mercedes W211 W164 W221 Diesel OM629 Mass Air Flow Sensor is a precision intake system component responsible for accurately measuring the amount of air intake in diesel engines. A properly functioning mass air flow sensor supports stable engine operation, correct fuel metering, and smooth engine performance. This component from the Air and fuel intake sensors group is designed for use in Mercedes vehicles equipped with the OM629 diesel engine.

Specifications and technical data

• SKU: A6290900248
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6290900248
• Substitutable numbers: A6290900248, A 629 090 02 48
• Fuel type: Diesel
• Category: Air Intake & Fuel Sensors

The role of the MAF sensor in the OM629 diesel engine

The MAF sensor in the OM629 diesel engine is responsible for accurate measurement of the air mass drawn into the intake manifold. Based on this data, the engine control unit selects the appropriate fuel dose, which affects:

• stable idle speed,
• proper dynamics during acceleration,
• reduction of smoke and excessive exhaust emissions,
• efficient fuel utilization in daily operation.

For an advanced diesel engine like the OM629, a functional air flow sensor is crucial for the proper operation of the injection system and turbocharger.

Purpose and compatibility

The offered mass air flow sensor is dedicated to selected Mercedes W211 and W221 class models equipped with the OM629 diesel engine. Using the correct sensor from the Air and fuel intake sensors group allows you to maintain compliance with the manufacturer's factory specifications and avoid engine performance issues resulting from incorrect part selection.

The component should always be selected based on vehicle data and manufacturer markings, which ensures a correct fit for the specific configuration of the intake and engine control system.

Benefits of using an original Mercedes sensor

The MAF sensor in this offer comes from the Mercedes brand, which means maintaining factory measurement characteristics and compatibility with the engine control unit software. In practice, this translates into:

• consistency of readings with other sensors in the intake and fuel system,
• proper response to changes in load and air temperature,
• lower risk of diagnostic errors related to parameter mismatch,
• maintenance of factory performance and engine smoothness.

For users who value predictable vehicle behavior and easier diagnostics, using a component from the original sensor group is a technically sound solution.

Product characteristics and condition

The offered mass air flow sensor belongs to the Air and fuel intake sensors category and is designed for use in engines powered by Diesel fuel. The product is marked in the inventory system with an SKU identifier, which facilitates its clear identification and order processing. The part has an assigned OEM part number and associated interchangeable numbers, allowing it to be precisely matched to a specific vehicle version.

The item is offered as used, which allows for economical repair of the intake system while maintaining the original manufacturer's specifications. This type of solution is often chosen for vehicle maintenance where both technical compliance and cost optimization are important.

Operational and diagnostic tips

When replacing the mass air flow sensor in a diesel engine, it is worth paying attention to the condition of the intake hoses, the air filter, and the tightness of the entire system. Incorrect sensor readings may manifest as a loss of power, increased fuel consumption, or the appearance of errors in the control unit memory. If you have doubts regarding the operation of the fuel supply system and the interaction of sensors with injectors and the pump, a specialist guide may be helpful – more information can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

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