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Mercedes Benz > Air Flow Meter > Choose Model

1A Auto provides mass air flow sensors & meters. The sensors fit in between the air intake hose and the air cleaner box and tell engine computer how much air the engine is consuming.

Recover your vehicle’s lost power and fuel economy; replace your Air Flow Sensor now. If your engine is not running properly because of a defective air flow meter, 1A has your answer.

1A Auto Mass Air Flow Sensors Features:

  • Strict quality control specifications ensuring you receive a durable sensor
  • Compare a 1A Auto Air Flow Sensor to an OEM sensor and save 30-50%
  • 'No Hassle' return policy on all in stock parts.
  • Direct replacement Mass Air Flow Sensor for convenient installation.

If you have any questions about a 1A Auto MAF Sensor or about our auto parts in general, call our ASE certified customer service representatives direct at 888-844-3393.

Mass Air Flow Sensor Questions:

What does a Mass Air Flow Sensor do?

The MAF provides information to the engine control unit (ECU) about the quantity of air entering the engine. Using this information, the ECU calculates how much fuel to supply to the engine for optimal combustion.

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What are the symptoms of a bad Air Flow Sensor?

  • Rough Idle
  • Power Loss
  • Reduced Gas Mileage
  • Hard Starting
  • Stalling at slow speeds


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I replaced the Air Flow Sensor, but the check engine light is still on, what should I do?

Replacement of the Air Flow Meter rarely results in an instant shut off of the check engine light. If your check engine light is still on after replacement but the engine is running correctly, the light will probably go off after a few cycles of driving with the new sensor (on some vehicles this could take as many as 50 cycles of turning the key on and off). You can also have the code cleared with the correct scan tool. Another possible remedy is to disconnect and reconnect the battery, although this may not work on all vehicles.


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Will this sensor fit my … vehicle?

Information regarding the Makes/Models that a 1A Auto Mass Air Flow Sensor will fit can be found, in bold, near the bottom of each individual part page. Please double check this information before you make your purchase. Call our friendly customer service reps at 888-844-3393 if you should have any additional questions.


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Where is the Mass Air Flow Sensor Located?

Usually it can be found inside air intake duct between the air filter and the engine.


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Can I install the Mass Air Flow Sensor myself?

That depends on the amount of familiarity you have with automobiles and the tools you have available. It’s usually a simple process, first find the sensor, then disconnect the negative battery cable. Disconnect the wiring harness and vacuum hose. Remove the screws/bolts holding the sensor in place and take out the old sensor. Reverse the process to install.


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