K&N parts matching Champ Labs. AF3940 air filter

The Champ Labs. AF3940 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
Mark Lovretin, Morris Plains, New Jersey
Fits like a glove, instructions were almost perfect. I believe I have a slight gain in acceleration and gas mileage. All my cars have always been equipped with K&N filters.
Daryl Glindemann, Brisbane, Australia
Fast delivery and easy to install. Certainly makes a difference.
Tony Morgan, Yorkshire, United Kingdom
Ordered on the Monday, fitted by Tuesday morning. Very easy to fit, comes with very easy to follow instructions, plus a layout diagram for the car your fitting it to, if your not 100% how to fit it. It seems to have had the desired effect too, the engine feels slightly more responsive under acceleration, and the engine sounds a little throatier, which is nice because V6's sound awful when you rev them, this does it's best to hide the high rev whine.
E-1987 K&N E-1987 Replacement Air Filter
List Price: $102.79
Your Price: $65.99