K&N parts matching Champ Labs. AF3940 air filter

The Champ Labs. AF3940 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Champ Labs. air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mark Lovretin, Morris Plains, New Jersey
Fits like a glove, instructions were almost perfect. I believe I have a slight gain in acceleration and gas mileage. All my cars have always been equipped with K&N filters.
Stefan Czechorski DDS, Wisconsin
Excellent product: washable / serviceable and it even has the OEM type mounting studs to secure the filter (some others have a large worm gear band to fasten filter to MAF sensor tube and thus not as secure) .  I have two of these K&N filters and therefore I can quickly exchange while I clean/soak/lube the other; one is always ready for install at service time. Well done K&N.
Daryl Glindemann, Brisbane, Australia
Fast delivery and easy to install. Certainly makes a difference.
E-1987 K&N E-1987 Replacement Air Filter
List Price: $102.79
Your Price: $65.99