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Air Flow Sensor Blog
Which type of Air flow sensor is PBT-GF40?
However, “PBT-GF40” does not refer to a part number. It simply indicates the type of plastic used for the housing – PolyButylene Terephthalate with 40% glass fiber content. PBT GF 40 natural (6943) is a 40% glass fibre-reinforced, medium-viscosity polybutylene terephthalate (PBT) with very high rigidity and toughness as well as high dimensional and chemical resistance.
The actual OE (original equipment) part number for identifying the correct MAF sensor looks different:
PBT-GF30 and PBT-GF40 are a frequently used plastic for plastic housings and therefore the designation can be found on almost all air flow meter housings from Original equipment manufacturers like Bosch or VDO/Continental or Hella. It does not matter whether the MAF fits for Mercedes-Benz, BMW, Porsche or any other vehicle. If you wish to learn more about this plastic, you can find a data sheet here.
Which number on the MAF is the OE number?
- For Bosch air flow meters the part number usually looks like this:
0 280 21x xxx. e.g. Bosch no. 0 280 218 185
- VDO/Continental air flow meters stick to the following pattern: 5WKxxxx , e.g. 5WK98101.
MAF sensor 5WK98101 / A 6450900048
- The newer MAF models of Bosch start with 0 281 xxx like the example below, which shows the Bosch number 0281002954 or 0281002955.
- BMW original numbers usually start with 1362, e.g. 13627602038.
- The Mercedes-Benz original numbers for MAF used to begin with “000 094”, e.g. 0000941048.
But for the newer models the Mercedes number starts with A2760 or A61109 or A65190 or A64590, there are even more variations.
