Located between the air filter and inlet manifold, the mass air flow sensor is one of the fundamental components of your vehicle's fuel-injection system. There are certainly several types of air mass meters that are created for different applications. Cold wire, hot wire or vane meter - whichever is mounted in your vehicle, you should keep it in shape for a reliable and long service. And we know how to help you.

Featured Products

  • Dorman® Mass Air Flow Sensor
    (1 reviews)
    # sp4091
    Mass Air Flow Sensor by Dorman®. Save time, money, and labor by replacing only the MAF sensor instead of the entire mass air flow assembly. Constructed with the latest design improvements and to precisely match OE form, fit, and...
    $17.21 - $291.95
  • Denso® Mass Air Flow Sensor
    (0 reviews)
    # sp4676
    Mass Air Flow Sensor by Denso®. The air filter is the last line of defense against the harmful airborne abrasives that have been proven to wear out engines before their time. With OE-quality engineering and materials, DENSO First...
    $79.28 - $132.83
  • Auto 7® Mass Air Flow Sensor
    (1 reviews)
    # sp4809
    Mass Air Flow Sensor by Auto 7®. Heat and dirt are your engine's greatest enemies. Let your engine breathe clean, fresh air and protect it from the destructive effects of dirt and dust. Auto 7 has the quality parts to repair your...
    $38.87 - $185.91
  • Cardone® Mass Air Flow Sensor
    (1 reviews)
    # sp7231
    Mass Air Flow Sensor by Cardone®. MAF Sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate scan tool readings for proper operation. 100% resolder of critical components ensures superior...
    $36.10 - $882.93
  • Motorcraft® Mass Air Flow Sensor
    (0 reviews)
    # sp5528
    Mass Air Flow Sensor by Motorcraft®. If you're looking for the most suitable replacement for a defective mass air flow sensor, Motorcraft is the way to go. It is the only MAF sensor recommended by Ford Motor Company for use in...
    $63.83 - $136.83
  • Bosch® Mass Air Flow Sensor
    (0 reviews)
    # sp1071
    Mass Air Flow Sensor by Bosch®. It's all a question of the right mixture. If your mass air flow sensor needs replacement, it pays off to rely on a premium quality Bosch mass air flow sensor. It guarantees optimum performance and...
    $49.80 - $905.81
  • Hitachi® Air Mass Meter
    (0 reviews)
    # sp5053
    Air Mass Meter by Hitachi®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you waste your time and...
    $134.25 - $294.95
  • Beck Arnley® Mass Air Flow Sensor
    (0 reviews)
    # sp6368
    Mass Air Flow Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s, brand...
    $71.39 - $1,034.45
  • Hitachi® Air Mass Sensor
    (0 reviews)
    # sp5054
    Air Mass Sensor by Hitachi®. This product by Hitachi is designed using the latest electronic-sensing and control technology to provide precise measurement of the air volume for optimum control of the air/fuel ratio, greater fuel...
    $65.68 - $455.53
  • Delphi® Mass Air Flow Sensor
    (3 reviews)
    # sp5750
    When it comes to MAF sensors, communication with the ECM is key. That’s why Delphi MAF sensors use all new parts - never remanufactured parts that could harbor debris and therefore send inaccurate readings to the ECM.
    $53.33 - $270.77
  • Richporter Technology® New Air Mass Meter
    (0 reviews)
    # sp1525
    New Air Mass Meter by Richporter Technology®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you...
    $79.40 - $266.39
  • Mitsubishi Electric Automotive® Air Mass Meter
    (0 reviews)
    # sp5491
    Air Mass Meter by Mitsubishi Electric Automotive®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you...
    $177.57 - $547.94
  • Python® Air Mass Sensor
    (0 reviews)
    # sp5514
    Air Mass Sensor by Python®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you waste your time and...
    $123.11 - $197.53
  • Standard® Mass Air Flow Sensor Connector
    (0 reviews)
    # sp7485
    Mass Air Flow Sensor Connector by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
    $10.03 - $62.76
  • Crown® Air Charge Temperature Sensor
    (0 reviews)
    # sp16009
    Air Charge Temperature Sensor by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
    $6.94 - $59.58


Featured Brands

MAF sensor identifies the mass of air that enters through the intake and then sends that info to the engine computer (ECU), which calculates the amount of fuel that must be injected to the cylinders. And when the sensor is damaged, the computer is simply not able to ensure the right mixture. The basic principle behind the operation of all MAF sensors is the same. The only thing that differs is the way the sensor meters the air mass.

The hot wire sensor is equipped with a heated filament. As the cool air rushes by, the filament cools down and its resistance changes so the current required to keep the temperature increases. The current increase is converted into voltage and sent to the ECU. The cold wire sensor defines the air mass using metal strips that vibrate when air goes through the meter. And it's the vibration frequency that is translated into the digital signal. Unlike the cold and hot wire sensors, the vane air meter measures pressure, volume and temperature of the air, then defines its density, and only then allows the ECU to calculate the air mass. Not that complicated, right? Well, however simple a MAF sensor seems to be, the issues are not that simple when it goes bad.

The MAF sensor is engineered to last as long as you own your vehicle, but things happen and it may fail. And when the sensor doesn't react properly to the flow changes, you get a lot of problems. A damaged unit may cause the engine hiccup when throttle position suddenly changes. The vehicle may hesitate after starting or run excessively rich/lean. So what causes problems in the first place? When the air filter is installed in the wrong way or is just bad, it allows unfiltered air into the system, and the MAF sensor gets dirty. If you use an oiled air filter, it can cause troubles too. And because the cleaning process is quite tricky, it's not that hard to damage the unit.

There are different ways to determine whether you mass air flow sensor went bad. For example, if your vehicle is running poorly and you believe it's because of the MAF sensor, you can unplug it. Should the engine run better when you do that, the MAF is most probably damaged. There is an easier way though. You can use an engine fault code reader. Anyway, if you see the CEL flashing and notice some of the symptoms of a bad MAF, don't procrastinate - take care of the problem. And when a replacement unit is needed, we'll be here for you.

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Mass Air Flow Sensors Reviews

Average rating:  4.5  4.7 - 28 reviews
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5 of 5
Jet Product Rocks
Everything was super easy.
RPosted by Rafael (Miami, FL) /
2007 Chevy Equinox
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