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2004 Ford Focus Air Filters

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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


Great Sound

Reviewed By Shawn L (EWING, NJ) Reviewed for a 2013 Ford Focus —6/18/2017 5:56 PM

Really makes the Turbo sound great in my Ford Focus ST. Left the airbox off.

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Injen Hydro Shield Reviews


Injen Hydro Shield

Reviewed By Benito G (Dallas, TX) Reviewed for a 2008 Ford Focus —6/20/2009 1:45 PM

I purchased the Hydro shield after putting on a cold air intake on my Ford Focus. Hydro-locking an engine using a CAI is a very debated subject and I wanted a little more piece of mind so I bought The Injen Hydro Shield. I won't be crossing any deep water but if I get caught in a heavy downpour I'll have more confidence with the Hydro shield installed.

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