OEM replacement HFM for 2007+ E82 128i, E9X 328i, E60 528i, E83 X3 3.0si, E70 X5 3.0si, and E89 Z4 30i. The airflow sensor or HFM (Hot Film Meter) is hugely important in the performance and fuel economy of the engine. Faulty airflow sensors usually cause rough running, poor idle, lack of performance, misfires, and higher fuel consumption. There may also be fault codes and check engine lights for air:fuel mixture, lean conditions, rich conditions, misfires, and others.
This is an OEM N51/N52 HFM manufactured by Continental VDO - the original supplier to BMW for this part, as well as many other engine and transmission mounts. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.
BMW Fitments:
1 Series
E82 / E88 (08-13) > 128i
3 Series
E90 / E91 / E92 / E93 (06-13) > 328i
E90 / E91 / E92 / E93 (06-13) > 328xi
5 Series
E60 / E61 (04-10) > 528i
E60 / E61 (04-10) > 528xi
X3 Series
E83 X3 (04-10) > X3 3.0si N52 (2007-2010)
X5 Series
E70 X5 (07-13) > X5 3.0si (07-10)
Z Series
E89 Z4 (2009-2016) > Z4 sDrive30i