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K&N BMW Replacement Air Filter (M140i) ML Performance UK

K&N BMW B58 Replacement Air Filter F20 F21 (330i, 440i & M140i)


  • £59.38
    exc. VAT £49.48
  • 7

Compatibility Check - Enter your full VIN. We will double check compatibility for you before dispatching!


K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.



  • Designed to increase horsepower & torque for the 2017 BMW M140i with the 3.0L engine.
  • Washable & Reusable
  • This K&N M140i air filter lasts the lifetime of your vehicle.
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®


Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.



  • BMW 120i, BMW 125i
  • BMW 220i, BMW 230i, BMW 230i xDrive
  • BMW 320i, BMW 320i GT, BMW 330e, BMW 330i, BMW 330i GT, BMW 330i GT xDrive, BMW 330i xDrive, BMW 340i, BMW 340i GT, BMW 340i GT xDrive, BMW 340i xDrive
  • BMW 420i, BMW 430i, BMW 430i Gran Coupe, BMW 430i xDrive, BMW 430i xDrive Gran Coupe, BMW 440i, BMW 440i Gran Coupe, BMW 440i xDrive, BMW 440i xDrive Gran Coupe,
  • BMW M140i
  • BMW M240i
  • BMW M240i xDrive



Million Mile Limited Warranty


Manufactured by



Part Number



Next Day UK Delivery

Get FREE Guaranteed next day UK delivery for orders over £100 (exc. VAT) on all in stock items. Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!

Worldwide Shipping

We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!

Customer Reviews

5 Based on 7 Reviews
5 ★
4 ★
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Easy peasy quick delivery

Super quick turnaround from order to delivery, and the filter perfectly fitted my M140i. Most importantly the unit includes a K&N sticker for extra gainz. Happy chappy.

Matthew T.
United Kingdom


No complaints at all. Arrived earlier than stated, firs perfect and works brilliantly. Thank you

richard m.
United Kingdom United Kingdom

KN filter M140i

Straight swap for original perfect fit

richard m.
United Kingdom

K&N filter M140i

Straight swap for original perfect fit

United Kingdom United Kingdom

Product delayed but kept fully informed - great customer service

I initially ordered a KN panel filter but it went out of stock and I was told it wouldn’t be in for a couple of weeks. I then decided to ‘upgrade’ to an induction kit and was invoiced the difference which I duly paid. That item too was unfortunately out of stock but I was told it would be back in for a couple of weeks time. It was sent out a bit earlier than that two week wait time and ML Performance kept me informed all the time. There was also a nice little note of apology when it arrived. Really great product and top customer service from the team at ML Performance and I’ll certainly be back to buy from them again.