K&N parts matching Champ Labs. AF3928 air filter

The Champ Labs. AF3928 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
Daniel Hill, Woking, United Kingdom
This performance air filter has drastically changed the acceleration on my BMW 330d. I had a full remap 6 months ago, and with the new air filter, the engine can finally suck in the air it needs to. I will replace the air filter on every car I buy now. Thank you
Lamiable Fabien , Holling, France
Rien a dire juste super sur tout les points
Artur Szymanski, London, United Kingdom
I can feel a better engine response, the fuel consumption dropped by roughly 20. Very happy with that buy so far.
33-2942 K&N 33-2942 Replacement Air Filter
List Price: $95.89
Your Price: $61.99