Not sure which 2009 Nissan Frontier 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:
"This is my fourth K&N filter I've purchased for a new vehicle. While it may not be noticeable with everyday driving, just knowing my vehicle is breathing properly is comforting." —Bruce F from Dublin, PA bought a K&N Air Filters for a 2009 Nissan Frontier, 4.0L V6.
"A lifetime filter for the cost of 2 or 3 paper filters. Not sure on the interstate, but it added 2 or 3 mpg at 60 to 65 mpg. Mileage was the main goal. I don't know about power, it definitely didn't hurt, seemed to pull out to pass a bit quicker. Simple installation, it took 5minutes," —Martin J from North Platte, NE bought a K&N Air Filters for a 2009 Nissan Frontier.
"I've run a K&N filter in my motorcycle for over 126,000 miles and it's been a darn fine filter that lets the bike breath and requires little upkeep. So, I just purchased a new Nissan truck and put a filter in it also. The initial impression of it is the truck seems to have a little better response and I did seem to gain 1mpg on the first tank of gas I used...
The price of OEM filters for this truck it would only take 2 to pay for the K&N so it was a no brainer to purchase the K&N proving it was very cost effective." —Raymond R from North Little Rock, AR bought a K&N Air Filters for a 2009 Nissan Frontier, 2.5L 4-cyl. engine.
"since I've just put this in, I haven't really noticed any difference. That being said, there was no problem with installation. Everything fit like the factory kind and I don't have to keep changing air filters...." —Michael R from Debary, FL bought a K&N Air Filters for a 2009 Nissan Frontier, 2.5L 4-cyl. engine.