K&N parts matching Champ Labs. AD3984 air filter

The Champ Labs. AD3984 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
Leonard Costrino, Darien Center New York
Couldn't believe how restrictive the original equipment air filter was . After installing the K&N replacement , the motor seems smoother and more responsive . The great gas mileage of my Subaru appears to have improved also .
Lindsey Andrews, Denver, Colorado
Recieved product in under a week. For my Subaru it was as easy as unlocking the latches and replacing the filter. Seemed to already make a difference.
Speed Racer, Los Angeles, California
Dealing direct with K&N is always a pleasure. Instant invoice was recieved and super fast shipping of the product. I've used their air filters on all my cars over the last fifteen years. You can expect better perfomance, a little better gas mileage and a deeper exhaust sound. Very pleased with this product. I would certainly buy again and recommend to a friend.
33-2304 K&N 33-2304 Replacement Air Filter
List Price: $77.99
Your Price: $50.99