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BMW M140i | M240i | 340i | 440i (B58) - RamAir Panel filter

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The Ramair panel filter for the BMW B58 engine found in the M140i, M240i, 440i and 340i  platform is a must-have upgrade when looking to improve the factory intake system. 

Designed as a direct replacement this filter can be changed in a matter of minutes on the drive-by any enthusiast. 

Once replaced the filter will allow a better airflow allows for an increase in Performace, This serviceable item can be removed and services rather than thrown away like the OEM filter.

This PRORAM performance filter has been designed to replace your standard OEM air filter inside your vehicles air box. These filters are made using a high quality, high flow, synthetic nanofiber filtration media which is pleated to maximise surface area and in turn increase air flow. Utilising over 35 years of experience in the field of motorsport filtration the PRORAM range by Ramair is the premium choice on the market today for your fast road or track car.


  • Filter Length: 267mm
  • Filter Width: 260mm
  • Filter Type: Flat
  • Filter Shape: Unique
  • Filter Material: Pleated Synthetic


  • High flow, synthetic nanofiber filtration media
  • Fits in the OEM Airbox and replaces inefficient paper filter
  • Lifetime washable filter
  • Precision injection molded for a perfect fit
  • Guaranteed surface area using high quality custom blended polymer