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23 reviews


mountune High Flow Air Filter [Mk4 Focus]

The mountune high-flow cotton gauze panel filter for the Mk4 Focus provides an instant improvement in both performance and induction noise and is easily installed in less than a minute.

Each mountune filter is manufactured using a multi-stage process resulting in a great fit and virtually no seepage of frame material into the filtration media producing the maximum available filter area.


  • Increased performance
  • Increased induction noise
  • Lightly oiled
  • Includes 'do not discard airbox sticker'
  • Lifetime warranty against manufacturing defects
  • As used in our m330 power upgrade

    Compatible models:

    Mk4 Focus ST 2.3-litre EcoBoost
    Mk4 Focus ST 2.0 EcoBlue (Diesel)
    Mk4 Focus ST-Line 1.5-litre EcoBoost
    Mk4 Focus ST-Line 1.0 EcoBoost

    Customer Reviews
    5.0 Based on 23 Reviews
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    Filter Reviews:
      United Kingdom United Kingdom
      Panel filter

      Instructions were self explanatory and easy to fit.

      Michael C.
      Australia Australia
      Looks amazing

      Yes but it. Is good

      Scott B.
      United Kingdom United Kingdom
      High flow air filter

      Really simple to fit and essential if you intend to upgrade in the future to the mtune smartflash m330, so glad I did just wish I didn't wait as long as I did