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K&N Air Filters Part #33-2458 Customer Reviews

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11 Customer Reviews

K&N 335xi

Reviewed by Matt G (SIOUX FALLS, SD) Reviewed for a 2011 BMW 3-Series — Oct 21, 2017 10:43 AM

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Quality product and fit. Miles per gallon improved.

K &N air filters

Reviewed by wayne m (Buckner, KY) — Aug 28, 2016 9:31 AM

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We have used your air filters for over 46 years starting with our dirt bikes when we were kids. Great products we could always count on. Just wash the mud off and go again

Fitter guy

Reviewed by Patrick F (Madison, WI) Reviewed for a 2012 BMW 3-Series — Dec 01, 2015 7:17 AM

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Works as advertised! Never a bad choice


Reviewed by Bill B (Smithfield, VA) Reviewed for a 2013 BMW X1 — Jun 26, 2015 3:56 AM

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Really not much to add. I've used these filters on the last 10 vehicles I've owned. Noticeable boost in horsepower. Some increase ( not much) in fuel economy.

2014 BMW X1!! The K&N filter goes in every car vehicle I buy!!!

Reviewed by Edward N (CAGUAS, PR) Reviewed for a 2009 Dodge Ram — Feb 12, 2014 7:38 AM

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For the past 15 years I've been using K&N on all of my cars. My latest was for my 2014 BMW X1 XDrive35i. The power this thing puts down with this simple to install filter is awesome. Breaths better on acceleration, downshifts smoother and the overall feel us tremendous. K&N filters should be standard on every make and model in the world. Enjoy!!


Reviewed by Bryan D (Sedona, AZ) Reviewed for a 2012 BMW 3-Series — Aug 06, 2012 8:19 PM

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tried and true filters

Reviewed by roy g (San Antonio, TX) Reviewed for a 2011 BMW 3-Series — May 12, 2012 6:17 AM

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have used k&n filters for years on many types of vehicles and as always has been and excellent product for gas mileage and performance.

I love AutoAnything! Price match and best Customer Service

Reviewed by Huy T (Bonsall, CA) Reviewed for a 2012 Toyota Sienna — Mar 19, 2012 5:14 PM

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5 of 5 people found the following review helpful.

Felt an awesome increase in throttle response and better MPG by about 1-2 mpg....

2011 BMW 335i & 2005 Harley Davidson FLTRI

Reviewed by David H (Ventura, CA) — Oct 07, 2011 8:28 AM

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Have been using K&N airfilter products on all of my vehicles (motorcycles and cars) since the late 70's. They pay for themselves over time and most of all I don't have to track anotherone down for the rest of the life of the car or motorcycle. They offer excellent overall performance too. Recharge is simple as all you have to do is remove it, spray on the the release agent, rinse it out, let it dry, re-coat lightly with the spray on oil, then simply re-install. I recharge my air filters during every third oil change.

1 Month review

Reviewed by Yaron G (Lido Beach, NY) Reviewed for a 2011 BMW 1-Series — Jun 04, 2011 4:31 AM

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No apparent improvement is performance nor improvement in gas consumption

K&N Air Filters - 33-2458

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