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For correct fitment, go to the Injectronics Online Catalogue and find your relevant part number. Once you have that part number, find it here using our "Search" page.

An Air Flow Meter, AFM or Air Mass Meter, AMM measures the air flow or air mass that is drawn into the intake of the engine. This measurement is transmitted as a frequency or a variable voltage to the ECM, ECU, or PCM so that it can calculate the correct amount of fuel to deliver via the injectors in relation to the air going into the engine. Other terms used for this sensor are: MAF Sensor, Mass Air Flow Sensor, or Karmen Vortex AFM.

Various designs have been used over the years by different manufacturers to measure the air delivery to the engine, including vane or flap, hotwire, hot film, membrane and karmen vortex type to name just a few.


  • Audi A3
  • Audi A4
  • Audi A6
  • Audi A8
  • Audi Allroad
  • Audi Q3
  • Audi RS4
  • Audi RS6
  • Audi S3
  • Audi S4
  • Audi S6
  • Audi TT
  • Skoda Octavia
  • Volkswagen Beetle
  • Volkswagen Caravelle
  • Volkswagen Eos
  • Volkswagen Golf
  • Volkswagen Jetta
  • Volkswagen LT35
  • Volkswagen LT46
  • Volkswagen Multivan
  • Volkswagen Passat
  • Volkswagen Polo
  • Volkswagen Touareg
  • Volkswagen Transporter

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3033 - Keilor East
3034 - Avondale Heights
3036 - Keilor, Keilor North
3038 - Keilor Downs, Keilor Lodge, Taylors Lakes
3039 - Moonee Ponds
3040 - Aberfeldie, Essendon, Essendon West
3041 - Essendon North, Strathmore, Strathmore Heights
3042 - Airport West, Keilor Park, Niddrie
3043 - Gladstone Park, Gowanbrae, Tullamarine
3046 - Glenroy, Hadfield, Oak Park
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3048 - Coolaroo, Meadow Heights
3049 - Attwood, Westmeadows
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