Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Not sure which 2011 Hyundai Sonata 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've used these filters on many cars over the years and I've always seen a noticeable increase in performance. This new Sonata has better acceleration." —James G from Richland, WA bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.0L 4-cyl. engine.
"the filters are easy to install as the OEM unit. I have not seen the gas mileage savings even though we used the car for a 2700 mile trip over 5 days right after install. We may have seen an increase in acceleration but hard to tell. Would still recommend the unit highly due to cost vs. ordinary paper filters due to their life expectancy of life of car." —Tomas C from South Dartmouth, MA bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.0L 4-cyl. engine.
"I have been using nothing but K&N filters for many years on all of my vehicles,cars,trucks and motorcycles.All of my vehicles have their air filters and the cycles also use their fuel filters.I have noticed performance and mileage improvements on all of them.I have also saved a considerable amount of money since the filters do not require replacement.The filter I just bought for our new car is my first purchase from Auto Anything and the price was great as was the whole transaction.I will definitly be buying from you in the future!!" —Robert G from Snohomish, WA bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.4L 4-cyl. engine.
"have seen slight improvement in per gallon, pick up slight to no difference, we'll see over the long haul how they withstand washing and reuse value..stay tuned.." —John K from Round Lake Beach, IL bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.4L 4-cyl. engine.
"Installation was simple. This filter is noticeably less thick than OEM filter, so filter surface area appears to be less? First noticeable improvement was engine idled smoother. "Seat of pants" acceleration seems better, engine revs to redline with no complaints. Gas mileage is unchanged. Bottom line is: filter installation is simple, engine runs better, car is more fun to drive. Worth the money!" —Robert D from Merritt Island, FL bought a K&N Air Filters for a 2011 Hyundai Sonata.
"Increased performance and MPG. Plus a sticker to put on the airbox to tell the servicer to "keep hands of air filter"" —Charles G from Bellevue, NE bought a K&N Air Filters for a 2011 Hyundai Sonata.
"I am very satisfied with my K & N air filter. It is a well made product and worth every penny I spent. Auto Anything price was very good combined with free and prompt shipping equals satisfied customer. I will be repeat customer would and will recommend them to my friends and family." —Michael H from Leawood, KS bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.4L 4-cyl. engine.
"Can save so much money by getting this reusable air filter. Thank you all so much." —John E from Dozier, AL bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.0L 4-cyl. engine.
"Have used K&N filters in a variety of vehicles for many years all with great success. Nice to be able to install an air filter and not worry about it for a while, then when needed clean it, re-install and keep going." —John D from Vero Beach, FL bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.4L 4-cyl. engine.
"I have used K&N air filters for several years and have had no problems. Just remember to use ONLY the K&N renewal kit and you'll be Ok. There are lots of stories about K&N products causing voided warranties, dealers that refuse to work on new cars because of the K&N filters, but this all hogwash. If properly cleaned and oiled there are NO problems. K&N maintains a staff of lawyers to fight any problems such as this you might encounter. If you have a problem just contact K&N.
I do not use K&N oil filters as they have a high flow low filtration media. These are for high performance short life engines." —Jack R from Burlington, NC bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.4L 4-cyl. engine.
"i'm been using kn air filters on all my cars aprox. for over 30 years; from family cars to sport cars. that say a lot about a satisfied customer and what to expect about kn air filters. i modified a kn filter to fit a corvette zo6 /2007" —Marcos R from Pensacola, FL bought a K&N Air Filters for a 2011 Hyundai Sonata, 2.0L 4-cyl. engine.