K&N parts matching Luber-Finer AF3997 air filter

The Luber-Finer AF3997 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Luber-Finer air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Rick, Ohio
Received the air filter very quickly. Installed it on a 2013 Nissan Frontier. Getting about 5 more mpg.
Tom Watson, Valrico, Florida
Everything was fine. Would purchase again.
Austin Griffith, Fountain Inn, South Carolina
I have used K&N filter in my motorcycles for many years, and was anxious to try them in my pick-up truck. I was not disappointed at all. I installed the filter prior to a 1200 mile trip and was pleased to realize an increase in power and gas mileage, just as I had in my motorcycles for years and years. Thanks for making a great product...keep up the excellent work
33-2324 K&N 33-2324 Replacement Air Filter
List Price: $82.69
Your Price: $52.99