Stock HFM/Mass Air Sensor, Bremi - E36 328i/M3, E39 528i 97-98

Critical part for fuel, timing, and all-around engine performance. High quality replacement for BMW part #13621703275

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This part is listed by BMW as BMW part number 13621703275 (13 62 1 703 275) and is described as the HFM (Mass Air Sensor) for 1996-1999 E36 323is/328i/M3 and 1997-1998 E39 528i.

This is the stock-sized HFM used for the above cars. Upgrades may also be available, depending on model.

The HFM (Hot Film Meter, or MAF) measures air density and temperature in the intake so the engine computer can make fuel adjustments on the fly. When it goes bad and no longer sends data the ECU will revert to a rich setting (more fuel) and eventually it will throw a fault code. If you're having drivability issues or MPG has dropped, remove the HFM and intake boots, clean with HFM cleaner, check for cracks in the boots, and reinstall. If problems persist it may be time for a new HFM.

This part is manufactured by an aftermarket supplier of European auto parts, including many electrical components. While not carrying OEM status, this part follows the design of the original very closely and uses similar materials. An aftermarket part may even have the same TUV approval as its OEM counterpart. The brand may even be OEM to another manufacturer besides BMW. This aftermarket brand has a two year warranty - the same as Genuine BMW and OEM brands.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.

BMW Fitments:
3 Series
E36 (92-99) > 323ic
E36 (92-99) > 323is
E36 (92-99) > 328i
E36 (92-99) > 328ic
E36 (92-99) > 328is
E36 (92-99) > M3 (96-99)
5 Series
E39 (97-03) > 528i 97-98
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