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K&N E-1997 Air Filter

Universal Air Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   11 Customer Reviews
  • 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®
The K&N E-1997 Air Filter fits some Ford Mustang Bullitt models. See vehicle applications link for details.
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 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. 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 K&N Replacement Air Filters]

Product Specifications

Air Filter ShapeRound Tapered
Filter MaterialCotton Gauze
Flange Inside Diameter4 in (102 mm)
Flange Length1 in (25 mm)
Flange TypeCentered
Height8.625 in (219 mm)
Base Outside Diameter6 in (152 mm)
Top Outside Diameter4.75 in (121 mm)
Top StyleRubber
Top MaterialNone
Package Contents1 Air Filter
Package Quantity1
Product StyleRound Tapered Universal Air Filter
Weight1.4 lb (0.6 kg)
Filter Re-Oiling Amount2.12 oz (63 ml)
Air Filter Large End Diameter6 in (152 mm)
Product Box Height11 in (279 mm)
Product Box Length6.38 in (162 mm)
Product Box Width6.38 in (162 mm)

K&N E-1997 Air Filter Product Reviews

Monday, December 18, 2017 - Part E-1997
Perfect fit, 10 minute install. Great customer service. Thanks guys.

William King
Clarksville, Arkansas
Monday, November 6, 2017 - Part E-1997
Excellent piece.

Timothy Stieve
Rib Mountain, Wisconsin
Wednesday, February 15, 2017 - Part E-1997
This is the fourth K&N product that I have purchased over the years and as always, easy install and by far a better product than the oem high performance filter that came on my Bullitt mustang. I tell everyone that buying stock filters is a waste of money in the long run and missing out on a smoother running engine, which helps immensely in the hot, Dallas, TX bumper to bumper traffic.

David Christensen
Cedar Hill, Texas
Tuesday, November 1, 2016 - Part E-1997
I received my filter promptly and in good order. I removed the original filter from Ford with little effort and was able to install the new one with some effort by bending it slightly into place without having to disassemble the connection joint. I appreciate that the screen is on the outside of the filter rather than having the paper composite on the outside and the screen on the inside like the original. That is the main reason I had to replace it because a critter had chewed the composite down to the screen and left exposed. Thank you so much for a great product that fits the Bullitt well.

Steven Hatfield
Columbia City, Indiana
Wednesday, December 23, 2015 - Part E-1997
I have used this air cleaner on my Mustang since it was new (2008) and the performance has been excellent. Though the original is still in great shape, I purchased this as a spare for when I need to clean one and don't have time. I travel a lot and sometimes the areas are very dusty. Note: It is similar to the stock cold air system but a lot less expensive.

Rochester Hills, Michigan
Tuesday, July 22, 2014 - Part E-1997
Great product. I only use K&N filters on my 2008 Bullitt!

Patrick Chellino
Las Vegas Nevada
Wednesday, November 13, 2013 - Part E-1997
This air filter is a significant improvement over the original equipment. Engine is noticably more responsive. If you are lucky enough to have a Bullitt Mustang, there are only two modifications that I recommend. One is to upgrade tires to 255/45/18 [brand], and the other is to upgrade cold air intake with K&N high flow filter!

Phoenix, Arizona