K&N parts matching Luber-Finer AF4021 air filter

The Luber-Finer AF4021 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Luber-Finer air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Joseph , Florida
Excellent service, great product, prompt delivery 5 stars. Thanks K&N
Mico Dukic, Ballinhassig, Ireland
Feels like a different vehicle, wish there was 2 stickers in the pack.
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