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Replacement Filters > Replacement Air Filter

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E-1991
 
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K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle 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. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED. [More Information on Replacement Air Filters]
  • 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 Limited Warranty®
Available Information
E-1991 Cross Reference
E-1991 Vehicle Applications
Air Filter Test Data
News Story - 2009 Dodge Durango Hybrid Gets K&N Air Filter Option


Part E-1991 Product Specifications
Product Style: Round Air Filter
Height: 3.125 in (79 mm)
Inner Wire: No
Inside Diameter: 9.375 in (238 mm)
Outside Diameter: 11.375 in (289 mm)
Top Style: Open
Top Material/Finish: None
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flanges: None
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 1.24 oz (37 ml)
Weight: 1.6 lb (0.7 kg)
Product Box Length: 12.25 in (311 mm)
Product Box Width: 12.25 in (311 mm)
Product Box Height: 3.63 in (92 mm)



Customer Feedback      Be the first to review part E-1991

I recently experienced a failure in a component of my 57-2541 Cold Air Kit after 100,000 trouble free, fuel saving miles. The problem was easily diagnosed and repaired by me at home. I contacted Elzabeth Taylor in Customer Service who was extremely helpful and very understanding in regards to my situation. She instantly shipped me a the part to replace the part that I field fixed in my driveway. She requested that I take some photos and send them to her so that Research and Developement could take a look and make any adjustments if necessary. I was delighted to comply and sent them back to her later that evening. I have K&N Cold Air Kits in my 1999 Ford F-150 and my son's 2013 Chevy Sonic 1.4 Turbo. I have an air filter in my wife's 2012 Dodge Caravan. Your products have served us well and delivered the performance figures that you quoted. Actually, I got better than quoted performance on my 1999 F-150. I averaged over 1.5 mpg increase after the intallation. I will be purchasing a Chevy Silverado with a Duramax Diesel engine very soon. I am anxious to see what we can do with K&N products at that time. Keep up the good work and the great customer focused service.
John R. Farill, Cookville, Tennessee
I received my K&N performance air filter for my 2011 Dodge Challenger and in just about an hour I had it installed and running. Installation was a snap with only one area to really watch what you're doing that's the air flow sensor. On GM and Ford products they are built a lot tougher than the Dodge type, but other than that all went quite well. I rated the product a five star because it really does enhance a vehicle's performance (plus it sounds cool). This is the fourth vehicle that I have installed this type of performance air filtering system on. I recommend this for any vehicle you drive, and if K&N doesn't make the type I bought they have replacement air filters for just about any vehicle out there.
Ken, Oregon
Installation of this filter was very easy. It fit very well and since my 2009 DODGE CHALLENGER is SUPERCHARGED it does allow my 5.7 Ltr Hemi to breath better but that may be just my positive thinking. It does however seem to respond just a tad quicker and I'll love the lifetime warranty and cleaning the filter every 50,000 miles even I know I'll probably check it more often and clean as needed. I'd recommend this K&N filter to anyone!
Wayne Boyd, Little Egg Harbor Township, New Jersey