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2004 Ford Focus Air Filters - Custom Fit

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Latest Customer Reviews

K&N Air Filters Reviews


VW Touareg

Reviewed By Peter H (Santa Maria, CA) Reviewed for a 2004 Ford Focus —9/5/2007 9:36 PM

I put the filter in with some sealing grease; it fit in nicely. It's only been 40 miles; so far I may be getting a tad bit better mileage, maybe 2 or 3%. The Touareg is heavy and slow with a V6, so I don't know if hp increase will be too evident.

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Green Air Filters Reviews


Better MPG

Reviewed By Jeffery C (FIFE, WA) Reviewed for a 2015 Ford Focus —5/30/2016 8:28 PM

I've seen about a 7% increase in mpg. The filter is well made. There is a bit more growl because the end is now open. The sound is mostly noticeable during hard acceleration. I have the 2.0 with DCT.

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aFe Air Filters Reviews


High workmanship, but a pain to fit

Reviewed By Arunabh C (CEDAR RAPIDS, IA) Reviewed for a 2007 Mercury Milan —6/20/2016 12:10 PM

The air filter has a solid build and inserting it added a growl to the sound of my engine. The problem with this filter was that due to it's better quality material used it is slightly thicker and not as bendable as the factory filter, this gives it a very tight fit in the air filter compartment and one has to struggle quite a bit to close the air filter compartment tightly

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