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K&N Air Filters Part #E-9233 Customer Reviews
35 Customer Reviews
Reviewed by Don R (Jacksonville, FL) Reviewed for a 2004 Nissan Frontier — Oct 09, 2015 6:05 AM
Installed the K&N filter in just a couple of minutes. Fuel mileage was averaging 26.5 to 28.5 before install. After new K&N install it increased to averaging 28.8 to 30.1. City and highway driving combined.
Reviewed by steve p (Glenwood, IA) Reviewed for a 2004 Nissan Frontier — Jan 31, 2012 3:07 AM
I purchased a K&N filter for my 2004 Nissan Frontier and am very confident I made the right choice! I have been using them in my vehicles and on my Harleys for a number of years now and they perform as promised! The best filter you can buy, period!!!
Reviewed by Michael F (Henderson, NV) Reviewed for a 1997 Nissan Hardbody — Feb 16, 2010 4:42 PM
Have been using K&N filters on every vehicle I own for over 25 years! It's the only way to go! Better mileage, more power, and washable.
Reviewed by Roger M (Shelby, NC) Reviewed for a 1999 Nissan Frontier — Oct 10, 2008 7:40 AM
Probably the best choice to provide adequate protection without undue restriction. I have used K&N filters on several high performance vehicles with good results.
Reviewed by Larry H (Roswell, NM) Reviewed for a 2002 Nissan Frontier — Oct 07, 2008 6:03 AM
I can tell by the sound of the engine that it is getting better air flow. I drive eighty miles a day and I have been getting about two miles per gallon better gas mileage than before. Great air filter.
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- Part #:E-9233