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When is it Time to Change Your Air Filter?

When Should You Replace Your Air Filter?

Choosing the Best Replacement Filter

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Product Comparison


K&N Air Filters aFe Pro-Dry S Air Filters K&N Cold Air Intake Replacement Filters Spectre Air Filter

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From $27.95


From $42.95


From $37.95 /each


From $25.95 /each


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Customer Rating

Price/Value

Ease of Installation

Quality

Appearance

4.50 Average Customer Rating

(10k+)

4.5 4.5 5.0 5.0
4.50 Average Customer Rating

(349)

4.5 5.0 5.0 5.0
5.00 Average Customer Rating

(41)

5.00 Average Customer Rating

(60)

5.0 4.5 5.0 5.0

Filter Type

Oiled


Oil-Free


Oiled


Oiled


Fit

Custom


Custom



Custom


Warranty

10-year/100,000-mile warranty


Lifetime Warranty


10-year/1,000,000-mile warranty


Lifetime Warranty


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Air Filters Customer Reviews

K&N Air Filter - 97 Acura CL 3.0

Appearance
Ease of Installation
Price/Value
Quality

Reviewed by Daniel N (Metairie, LA Reviewed for a 1997 Acura CL—2006-08-20 18:42:08

The air filter improved my performance, but no improvement in gas mileage.

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No complaints

Appearance
Ease of Installation
Price/Value
Quality

Reviewed by Joshua V (Fernley, NV Reviewed for a 2007 Audi A4—2010-11-11 21:35:09

Second one I have owned. I prefer the dry over the oil filter as a precaution to preserving the mass air flow sensor. I would buy another one.

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Ask & Answer

Asked by Anonymous A.

12/22/2011 10:36:42 AM

02 745i Filter

I would like to know how many filters come in a box since my 7 takes a passenger and a driver side cabin air filter.

Staff Answer

Answered by Michael K. — 12/22/2011 5:47:37 PM

These are air intake filters for your engine's intake system, not cabin air filters. Unfortunately, we do not carry cabin air filters, those would probably be best purchased from your BMW dealership.

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Asked by Anonymous A.

7/4/2012 10:16:39 AM

aFe ProGuard 7 Filter

Will using this filter void the factory warranty on my 2011 F-250 (Power Stroke)? Thanks.

Staff Answer

Answered by Elizabeth C. — 7/6/2012 3:26:13 PM

No it will not. Thanks to the Magnuson Moss Warranty Act: US Code – Title 15, Chapter 50, Sections 2301-2312, your vehicle’s factory warranty is protected by law when you add aftermarket parts. Check it out here: Magnuson Moss Warranty Act.

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