K&N parts matching Champ Labs. AF3917 air filter

The Champ Labs. AF3917 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
Vin, Red Bank, NewJersey
Well worth the effort and price to get this filter - there's a noticeable increase in HP immediately.
Paul Fineberg, Woodbridge, Virginia
Another great K&N filter, that fit right in like a glove in my 2017 BMW X5. I could feel the difference the first time I jumped on it on the highway. It was quick before, but you can feel even more zip off the get-go with the increased air that the K&N is providing.
Abbas Khan, Milton, Canada
Excellent product. This is the second set of K&N filters that I have purchased this year. The other set were for my Audi R8 V10. Both installs were fairly straight forward. I love the sound and the noticeable increase in horsepower. I will always install K&N for any vehicle that I own or may own in the future. Cheers,
33-2428 K&N 33-2428 Replacement Air Filter
List Price: $94.39
Your Price: $60.99