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K&N Air Filters - Custom Fit

Fill your engine with cleaner, richer oxygen for immediate gains in horsepower, efficiency, and throttle response. The unique foam design of K&N custom fit air filters is ideal for filtering out fine grit that gets through lesser filters. And, they are custom-sized for a perfect replacement.
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Latest Customer Reviews

K&N Air Filters Reviews


Great value

Reviewed By Izak B (Hopewell Junction, NY) —3/25/2015 8:12 PM

Love it!

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K&N Air Filters Reviews


2007 Chevy Impala

Reviewed By Ruben V (La Porte, TX) —3/25/2015 1:16 PM

Filter fit perfect. Fast shipping.

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K&N Air Filters Reviews


Lifetime Filter Improves Performance

Reviewed By Scott I (MINDEN, NV) Reviewed for a 2005 Lexus ES 330 —3/25/2015 7:15 AM

I learned from driving a diesel the importance of air flow in helping performance. The K and N filter for my Lexus was a little bit difficult to install because the rim is thicker than the stock air filter. But there was an immediate and noticeable improvement in performance. The savings in fuel will pay for the filter, and it never needs to be replaced.

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