Not sure which 2003 Toyota 4Runner Air Filters - Custom Fit is right for you? We have over 14143 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:
"I installed it on my 2003 V8 4-Runner.The quality is first rate and as good or better as the coimpetition. I made my decision because it filters down to 2 microns- better than K&N. The fit was perfect." —Frank S from Saint Louis, MO bought an aFe Air Filters for a 2003 Toyota 4Runner.
"I drive a 2003 Toyota 4runner SE with 47000 miles.
I have a 10 mile commute to work (5 each way with 12 stop lights each way). Before buying the K&N filter I had the Toyota Stock Paper filter and (It was really dirty) I was averaging 16 mpg (city) according to the computer. Now to my surprize, I am averaging 17.9 mpg (per the computer). It now meets the mpg advertised by toyota. I do not know if all the truck needed was a cleaner airfilter to meet the mpg's or if in deed this air filter has made the difference. One thing I can assure you is that I woun't be buying another filter until this one expires. BTW highway is now 23mpg from 21.5 mpg.
Ohh, I have to purchase the cleaning kit.
Hopefully this helps you decide." —Dax C from Columbia, MD bought a K&N Air Filters for a 2003 Toyota 4Runner.
"Bought 2 K&N Air Filters and installed in 2003 Toyota 4 runner and my 2004 Toyota limited Tundra. The results were immediate in improved overall performance. Gas mileage also improved 2 to 3 miles per gallon.
Sullivan, MO 63080" —Dan S from Sullivan, MO bought a K&N Air Filters for a 2003 Toyota 4Runner, 4.7L V8.