K&N parts matching Champ Labs. AF4038 air filter

The Champ Labs. AF4038 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
George , Los Angeles, California
The K&N filters for my '08 Nissan 350z are great. Pricey but worth it. You feel it faster and louder! It's worth the 8hp :)
Giovanni, Vacaville, California
A million times better than the stock filters. Highly recommend to anyone!
WILLIAM KELLER, Costa Mesa, California
Easy installation. Immediate increase in economy and performance
33-2399 K&N 33-2399 Replacement Air Filter
List Price: $90.49
Your Price: $58.99