K&N parts matching Champ Labs. AF4031 air filter

The Champ Labs. AF4031 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
Trey, Florida
Put this in my wife's Toyota Sequoia 5.7 as we've had this type air filter in all our past vehicles. As always, I love that lil extra kick.
Oswald Sheather, Hawaii
I am very pleased with the product I purchased also the shipping and handling time it took for delivery.
John Jones, Massachusetts
I have not used the filter yet as the old filter is still good. I am sure it will be fine as everyone that has one likes it.
33-2387 K&N 33-2387 Replacement Air Filter
List Price: $91.99
Your Price: $59.99