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Replacement Filters > Replacement Air Filter

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E-2021
 
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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 virtually every vehicle 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. [MORE]
Available Information
E-2021 Cross Reference
E-2021 Vehicle Applications


Part E-2021 Product Specifications
Product Style: Round Air Filter
Height: 4.5 in (114 mm)
Inner Wire: No
Inside Diameter: 3.156 in (80 mm)
Outside Diameter: 5.125 in (130 mm)
Top Style: Rubber
Top Material/Finish: None
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flanges: None
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 0.79 oz (23 ml)
Weight: 1 lb (0.5 kg)
Product Box Length: 7.06 in (179 mm)
Product Box Width: 7.06 in (179 mm)
Product Box Height: 7.13 in (181 mm)



Accessories
99-5050.jpg
99-5050 - Filter Care Service Kit - Squeeze

Customer Feedback      Be the first to review part E-2021

BMW 320i e36 with K&N stock replacement air filter
Perfect sound, instant reaction.
Thanks
David Novotný, Czech Republic
BMW E36 320i Convertible

Hi Guys from the UK,

My son has installed K&N filters on his last few cars and is always singing its praises. He first experienced these amazing filters when he worked at the famous Silverstone Race Circuit in the UK. Well, he 'demanded' I install one on my beloved BMW convertible. The first thing I noticed was the fantastic noise then I experienced the power. I was very impressed.

My son has a BMW E36 2.8i Coupe and has filter with heatshield [ mine does not have this]. Just to prove a point he installed his filter with shield in my car yesterday and we took it for a test drive. I simply could not believe the amazing amount of extra pulling away power I had at 2500rpm - it was awesome!!!

So much so, that now I am in the process of having a K&N Apollo CIS filter fitted whilst having the car super chipped. So, between the both I am hoping that my car will have an amazing new lease of life. 'Boy-racers' just admire my lovely rear end when I leave them to simply ponder the question at the lights "what on earth has that lady got under her bonnet"!!!

Am recommending to all our colleagues who love and respect their cars. I shall install my old filter into my daughter's car - she needs to be converted also!

THANK YOU K&N
Kaye, Torquay, Devon UK
1992 BMW 320i

I have always used K&N air filters on all the vehicles I have owned.  Fitting a K&N air filter is the simplest and easiest way at instantly jumping up the enjoyment you get from driving your vehicle.  My latest vehicle is a BMW 320i 1992 E36.  I drove it around for four painful months with the standard paper filter and then the day came when I installed the K&N replacement panel filter.  Wow!!  What an immediate difference.  Now my BMW 320i feels more like a 325, very lively and responsive! I almost have to learn how do drive my car again.  The increased power and mpg are amazing from such a simple product.  My BMW now feels like a weird horse trying to leap forward at every opportunity.  Torque from low down revs right up to red line has jumped right up!  Cruising around, overtaking, off the lights and motorway driving have improved more than I thought possible!  My BMW 320i is now sheer pleasure to drive everyday!  Thanks K&N you have totally transformed my BMW 320i from a tame coupe into a very sporty coupe with improved fuel economy of up to 7-10% !!!  My K&N replacement panel filter will pay for itself within the next few months!!

Thank you,
Charlie, London, United Kingdom

K&N E-2021 fits the following:
2012 BMW 320I 2.0L L4 F/I - Exc. F30/F31
2012 BMW 318I 2.0L L4 F/I - All
2012 BMW 316I 1.6L L4 F/I - N45N Eng
2011 BMW X1 18I 2.0L L4 F/I - All
2011 BMW 320I 2.0L L4 F/I - All
2011 BMW 318I 2.0L L4 F/I - All
2011 BMW 316I 1.6L L4 F/I - N45N Eng
2011 BMW 120I 2.0L L4 F/I - All
2011 BMW 118I 2.0L L4 F/I - All
2010 BMW X1 18I 2.0L L4 F/I - All
2010 BMW 320I 2.0L L4 F/I - All
2010 BMW 318I 2.0L L4 F/I - All
2010 BMW 316I 1.6L L4 F/I - N45N Eng
2010 BMW 120I 2.0L L4 F/I - All
2010 BMW 118I 2.0L L4 F/I - All
2010 BMW 116I 1.6L L4 F/I - All
2009 BMW 320I 2.0L L4 F/I - All
2009 BMW 318I 2.0L L4 F/I - All
2009 BMW 316I 1.6L L4 F/I - N45N Eng
2009 BMW 118I 2.0L L4 F/I - All
2009 BMW 116I 1.6L L4 F/I - All
2008 BMW 320SI 2.0L L4 F/I - All
2008 BMW 320I 2.0L L4 F/I - All
2008 BMW 318I 2.0L L4 F/I - All
2008 BMW 318I 1.6L L4 F/I - N45N Eng
2008 BMW 120I 2.0L L4 F/I - All
2008 BMW 118I 2.0L L4 F/I - All
2008 BMW 116I 1.6L L4 F/I - All
2007 BMW 320SI 2.0L L4 F/I - All
2007 BMW 320I 2.0L L4 F/I - All
2007 BMW 318I 2.0L L4 F/I - All
2007 BMW 120I 2.0L L4 F/I - All
2007 BMW 118I 2.0L L4 F/I - All
2007 BMW 116I 1.6L L4 F/I - All
2006 BMW 320SI 2.0L L4 F/I - All
2006 BMW 320I 2.0L L4 F/I - All
2006 BMW 318I 2.0L L4 F/I - All
2006 BMW 120I 2.0L L4 F/I - All
2006 BMW 118I 2.0L L4 F/I - All
2006 BMW 116I 1.6L L4 F/I - All
2005 BMW 320I 2.0L L4 F/I - All
2005 BMW 318I 2.0L L4 F/I - 129BHP
2005 BMW 120I 2.0L L4 F/I - All
2005 BMW 118I 2.0L L4 F/I - All
2005 BMW 116I 1.6L L4 F/I - All
2004 BMW 120I 2.0L L4 F/I - All
2004 BMW 118I 2.0L L4 F/I - All
2004 BMW 116I 1.6L L4 F/I - All