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K&N 33-2431 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   24 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 33-2431 Air Filter fits some Ford Mustang, Ford Mustang Boss 302, and Ford Mustang GT 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 ShapePanel
Filter MaterialCotton Gauze
Height1.25 in (32 mm)
Outside Length12.25 in (311 mm)
Outside Width9.625 in (244 mm)
Package Contents1 Air Filter
Package Quantity1
Product StylePanel Air Filter
Weight1.9 lb (0.9 kg)
Filter Re-Oiling Amount1.69 oz (50 ml)
Product Box Height1.69 in (43 mm)
Product Box Length12.5 in (318 mm)
Product Box Width10.38 in (264 mm)

K&N 33-2431 Air Filter Product Reviews

Monday, December 11, 2017 - Part 33-2431
I had a very good customer experience with the website and order process. I am impressed with the quality of K&N air filters, which is why I installed one on my 2013 Mustang GT.

Douglas A Heitkamp
Saint Paul, Minnesota
Tuesday, September 26, 2017 - Part 33-2431
Very good and extremely quick delivery. Product excellent.

Michael Powell
Penllergaer. Swansea, United Kingdom
Thursday, August 31, 2017 - Part 33-2431
My experience with this order (my first time ordering from K&N) was almost perfect. The only very minor problem was that installation instructions were not provided with the order for this filter, although I didn't really need them anyways. Also, there wasn't a decal with it either. Everything else was great though.

Edward Hopps
Windsor, Canada
Wednesday, March 1, 2017 - Part 33-2431
I bought this filter hoping for better throttle response from my 2014 V6 Mustang. I am not disappointed. It gets up and goes immediately with no hesitation. Plus, I have noticed a slightly deeper running tone. She looks good, she sounds good and she takes off like a spirited pony. Nice! Thank you for a great product.

Mustang Sally
Saint George, Utah
Monday, January 2, 2017 - Part 33-2431
Love this air filter!

Bruce Rothstein
Los Angeles, California
Monday, August 15, 2016 - Part 33-2431
I've been using it for about 2 months now and it has worked great. It still looks brand new, no bends, still clean.

Bobby Montgomery
Crestwood, Kentucky
Tuesday, May 17, 2016 - Part 33-2431
Thank you K&N! Great products!

Ryan Chaapel
Troy, Pennsylvania