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2001 Ford Focus
Air Filters

Not sure which 2001 Ford Focus Air Filters are right for you? We have over 14810 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:

"Since installation of the K&N Filter I get about 2 additional miles per gallon on road trips. The engine also seems to be more responsive in acceleration." —Bill J from Charlottesville, VA bought a K&N Air Filters for a 2001 Ford Focus.

In addition to Ford Focus Air Filters, you may also enjoy one of these popular products: K&N Filter Recharger Kit (Aerosol Can), Vision X Premium White Headlight Bulbs, Heininger SofTop Roof Top Cargo Bag.
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Customer Reviews

Injen Hydro Shield

Great Product

I bought the shield for my long ram cold air intake and so far so good. I've been in a few rainstorms already and no problems. I still have to watch out for large puddles obviously but this shield takes away all the worries of road rain. Deff. Recommended View more reviews...
Posted By Kathleen G (Horseheads, NY) / June 1, 2007
2001 Ford Focus
Injen Replacement Air Intake Filters

Easy and Fast

Good buy for the price, as long as you know what size your intake is, its easy and fast! View more reviews...
Posted By Matthew C (Chattanooga, TN) / August 15, 2006
2003 Ford Focus
K&N Cold Air Intake Replacement Filters

Regular Maintenance

original filter had been in place for 4 yrs with nearly 50,000 miles on it. i noticed a decline in performance & fuel economy. ordered a replacement filter, easy install and back to good running health in no time. K&N is GOOD for your engines. I would recommend it to anyone. View more reviews...
Posted By Terry S (HANOVER, VA) / December 16, 2022
2008 Ford F-250

From our experts

Monday, December 10, 2018

What Do Air Filters Do?

How Air Filters Work The internal combustion engine in your vehicle is really just a big, complex air pump. Air gets sucked in, mixed with fuel, burned and sent back out in the form of exhaust. But since air around motorways tends to be dusty, dirty, debris-laden, there needs to be a filtration device to […] The post What Do Air Filters Do? appeared first on AutoAnything Resource Center.
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