K&N parts matching Champ Labs. AF4021 air filter

The Champ Labs. AF4021 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
Mico Dukic, Ballinhassig, Ireland
Feels like a different vehicle, wish there was 2 stickers in the pack.
Joanna, Alabama
Never have to worry about changing my filter again! Love it!
Joey, San Clemente, California
Fantastic service and fast shipping. Filter is a perfect fit as to be expected from K&N.
33-2378 K&N 33-2378 Replacement Air Filter
List Price: $88.69
Your Price: $56.99