K&N parts matching Fram CA3901 air filter

The Fram CA3901 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Fram air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Lance Rizzuto, Williamsburg, Virginia
I have had many K&N filters. This one was for a jeep that for the first time towed a motorcycle trailer from NJ to Williamsburg Va. The Jeep ran hot towing so one of the few things I could do while do on Vacation was to get a K&N filter to help for the trip home. K&N got it to my resort the next day. It added enough power that I ran about 20° cooler. K&N, Good Stuff. Worth the price just on that one trip.
33-2018 K&N 33-2018 Replacement Air Filter
List Price: $97.99
Your Price: $62.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mike, Tappahannock, Virginia
Excellent product. The filter fit better than the OEM one. Noticed a bump up in acceleration after driving for a few days. Way better than other filter brands. Money well spent.
Verlin Kamps, Mukwonago, Wisconsin
As usual I received a quality filter at a fair price. Installed it in my newly acquired 98 Dodge Ram 1500. Real or imagined, it breathes better and runs stronger. T
Ralph Kimmell, Ford City, Pennsylvania
Filter made a positive improvement, my old air filter did not look dirty either.
33-2084 K&N 33-2084 Replacement Air Filter
List Price: $91.89
Your Price: $58.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Matt Lee, Reynoldsburg, Ohio
Love K&N filters. Have always bought them for my cars.
Christopher Jorda, New Jersey
Ordered twice from K&N once for my 98 Eclipse (short air intake system) and my 2002 ZX6R. Both products made me love K&N. This time I bought an air filter for my 2001 Jeep Cherokee and its great and easy to install. I always recommend K&N to my friends.
Daniel Saad , Royal Oak, Michigan
This is the third vehicle in which I've installed a K&N filter - always a great investment.
33-2122 K&N 33-2122 Replacement Air Filter
List Price: $102.39
Your Price: $65.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Jim Hasch, New Haven, Indiana
I have been using your products ever since they appeared on my local market scene. I love them. Period! 'Nuff said! Haha!
Scott McGhie, Templeton, California
Great customer service and easy to use web site. Noticeable improvement in performance after installation of Air Filter.
Brian Ruhland, Winona, Minnesota
I used K&N air filters for over 15 years. They are great products that provide good power improvement.
33-2175 K&N 33-2175 Replacement Air Filter
List Price: $90.39
Your Price: $57.99