K&N parts matching DuraMAX DA4021 air filter

The DuraMAX DA4021 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many DuraMAX air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Tiago Boiça, Linda-a-Velha, Portugal
tudo certo
Theo, Midlands, United Kingdom
Fantastic boost in performance a bonus.
Joanna, Alabama
Never have to worry about changing my filter again! Love it!
33-2378 K&N 33-2378 Replacement Air Filter
List Price: $88.69
Your Price: $56.99