Christopher B.
My adaptor was missing on my intake…
My adaptor was missing on my intake kit. Contacted customer service and they are over nighting the part. Took 10 mins and was easy!

For over 50 years, K&N® has been an industry-leader in automotive filtration and technology—offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide. K&N offers replacement air filters, air intakes, oil filters, cabin filters and more, factory-direct from knfilters.com, the official site for K&N performance filtration products.
K&N (knfilters.com) has 75 customer reviews on Five Star Index, with an average rating of 1.8 out of 5.
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Excellent

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Showing 13 reviews with 5 stars · Clear filters
Christopher B.
My adaptor was missing on my intake kit. Contacted customer service and they are over nighting the part. Took 10 mins and was easy!
Jarrid B.
I called the customer service number Wednesday 5/14/25 about 4pm and Katherine answered the line. I have never had a warranty exchange made so easy on any product I've ever had! I've used k&n products since I started driving 22 years ago and this was the first issie I've had, and because of Katherine's help, service, and professionalism, I will continue to use k&n more for the service than any other reason!
Miss U.
I ordered a K&N air filter because it was recommended to me and I'm satisfied with the product! I received it very quickly by mail. Great service as well.
David M.
I ordered a Cold Air Intake from K&N alongside a complete filter set, I got the right filters but the wrong Intake. I'd sent 5 emails in total & hadn't got a response back so I was starting to get concerned, but they sent me an email apologizing for the delayed response and to let me know they shipped the correct one...and never asked me to return the wrong one they sent! HUGE SHOUT OUT TO CUSTOMER SUPPORT AT K&N, YOU'RE AWESOME!!
Christopher H.
I would like to say that they stand behind there product. I called them about a possible warranty on an air filter for my motorcycle. I purchased the bike used in 09 and the first thing I did was install a K&N air filter. It’s now 2024 and the filter media has started to deteriorate. I have always cleaned it every spring for the summer riding season. I called them and explained what was going on with the filter. They sent me a new one no questions asked. They didn’t even have me pay shipping. I was not expecting that. I will definitely be only running there filters for the rest of my life. You have definitely made a costumer for life.
Ronald R.
Have always fitted a K&N to all my cars I recently bought a Nissan Micra 2012 and was averaging 53mpg now with the K&N fitted I'm averaging 63mpg on a run FANTASTIC I am barely touching the throttle now in 5th Gear Tickover now at 800RPM ( down from 1000) can't recommend it enough
Flicksify R.
Amazing customer service. The guy who helped me was very nice and helped me get the part i was looking for. He also told me it was completely under warranty and i didnt have to pay a dime. I was unaware of that and ready to pay for it. Also shipped out and was delivered super quick.
JamesS
I've had K&N filters in all my bikes and vehicles for a couple of decades. The fuel mileage increase was always there. The power increase was always evident in the bikes and a couple trucks. I just read a single star review and was surprised on his poor review until I read other reviews by him. He hates everything and gives poor reviews to all products and services. Great job K&N!