K&N® - E Series Air Filter

12 reviews|Item # sp18750|Similar Products
$54.99 - $449.99
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Product Details

E Series Air Filter by K&N®. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N makes over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. K&N stock replacement air filters for street vehicles are covered by K&N famous K&N Million Mile Limited Warranty and will be the last air filter your vehicle will ever need.


  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile/10 Year Limited Warranty

Most air filters on the market are a compromise. Many high-performance filters deliver better airflow, but sacrifice filtering ability and engine protection in the process. OEM filters, which are usually made of paper, filter adequately but at the expense of airflow. And airflow decreases as these air filters become dirty. Not so the K&N air filter. K&N air filters increase airflow without decreasing filtration ability, and the increased airflow remains consistent throughout the filter's service interval. The secret is in the K&N filter's construction.

K&N's initial goal was to develop a filter that would deliver increased airflow during dirty, dusty off-road racing conditions. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. K&N's solution was a filter design consisting of 4 to 6 layers of cotton gauze sandwiched between two aluminum wire screens. The cotton is then treated with a specially formulated grade of oil that causes tackiness throughout the cotton’s microscopic strands. The resulting K&N filter not only delivers increased airflow while trapping dirt particles that could harm your engine, that level of airflow is maintained even as the filter gets dirty. The layers of oiled cotton fibers in the K&N filter trap dirt particles that are smaller than the holes in the filter media. The thickness of the layers also allows the K&N filter to trap dirt and dust on many levels, trapping more dirt without decreasing airflow. Contrast this with a paper filter that only traps dirt on its surface; as the surface area becomes clogged, the airflow rate goes down.

Each K&N air filter is custom designed to fit into your existing factory air box. The K&N filter is economical because it's the last air filter you'll have to buy for your car. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. And every K&N filter is backed by K&N's Million Mile Limited Warranty. By the way, check the CARiD reviews and read what the customers think of K&N products.

K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 50 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.

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K&N® - E Series Air Filter
1-10 of 12 Reviews
I've always liked K&N, but lately their products have been less than desirable. I ordered this product with missing parts. It says in the install instructions that there are supposed to be 2 washers to secure it to the factory airbox. These were not included upon it's arrival to my doorstep. So I had to instead go to a hardware store and get the appropriate 8x32 washers/screws to complete the install. You get 3 stars due to brand loyalty, otherwise you'd only get 1.
Posted by Andrew (South Lake Tahoe, CA) / July 04, 20222014 Audi S4
5 of 5
Great Filter
Great price for a great product. Installation was easy and gives my Jeep the kind of push it needs!
Posted by Richard (Walnut, CA) / October 12, 20152012 Jeep Patriot
5 of 5
Nice Intake Upgrade
Have this installed in my other car and love it, pays for itself within a year easy to install and clean.
Posted by Avian (Raleigh, NC) / February 13, 20152011 Audi S5
5 of 5
K&N for My Diesel
The installation was very simple and the extra throttle is very noticeable. My long haul travel gas mileage was increased by 2 more miles to the gallon. I am a satisfied customer.
Posted by Errick (Sackets Harbor, NY) / June 15, 20132013 Dodge Ram
5 of 5
K&N for 08 Boxter
It fit!!! Instructions were good. K&N is super quality and I have them in all my vehicles. And did I mention that they fit. No hassle with replacing OEM, these filters FIT.
Posted by Riney (Grand Junction, CO) / October 18, 20122012 Porsche Boxster
5 of 5
Sgt G.A.Bielik
What can you say...K&N is always top of the line. Like the increased pep and mpg.
Posted by George (Asheville, NC) / July 27, 20122008 Jeep Patriot
5 of 5
K&N Air Filter
I ordered a K&N air filter from CARiD and received in 4 days. The fit was perfect and I noticed an increase of throttle response and at least a 2-3 mile per gallon increase on my first tank refill. CARiD is a great company to trust on your vehicle accessories orders. Thank you. Jim Dowis.
Posted by James (Blairsville, GA) / April 11, 20122012 Jeep Patriot
5 of 5
No Hassle Service
Used CARiD for the first time to buy K&N intake filters. The product was dropped shipped directly from the manufacture. The price was the best available, shipping was free and the filters came in a few days. Great service!!!
Posted by John (Tulsa, OK) / March 28, 2012
4 of 5
Good Product
Very good product.
Posted by Crestini (Vernier Genève Suisse, VERNIER GENèVE) / January 06, 20121980 Cadillac Seville
5 of 5
K&N Air Filter
The quality is good, and well performed.
Posted by Shan (Croydon Park, NS) / January 04, 20122012 Ford Focus
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