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2011 Audi A4 Air Filters

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Latest Customer Reviews

K&N Air Filters Reviews


Top of the line quality air filter

Reviewed By Son L (poway, CA) Reviewed for a 2011 Audi A4 —12/17/2014 8:28 AM

I always use K&N in my cars. For performance cars I went straight for full kit. For family or others I use replacement drop-in filter with little modified for more incoming air.

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K&N Cold Air Intake Replacement Filters Reviews


K&N filter was great

Reviewed By Matt C (Milpitas, CA) Reviewed for a 1982 Nissan 280ZX —2/22/2015 9:15 AM

I have ordered in the past and this one didn't disappoint. the best part, besides the great red color, is that you can feel the difference in the sound and the response of the engine.

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Volant Cleaning Kit Reviews


Love It

Reviewed By Kendall C (GRAYSON, GA) Reviewed for a 2009 Ford F-150 —1/27/2015 8:18 PM

The oil brought the color back into the filter. When you clean it, it does take awhile to dry.

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