K&N parts matching Navistar WAF3961 air filter

The Navistar WAF3961 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Navistar air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Royal, Canada
Always a great product. I was annoyed by a couple of things within the shipping process however. Delivery speed was great but in addition to the pricing being in US$ and fhus needing conversion, I was also hit with customs fees and import taxes. In all my product went from $58.99 with free shipping, to $78 + $21 import fees. Next time I will check further into buying locally rather than from K&N directly to see of its cheaper.
Manuel Montoya, Texas
Great air filter for my RX-8; noticed an improvement almost instantly.
Stan, Spartanburg, South Carolina
Very pleased with the service and delivery of my purchase. Have not really tested my product out fully, but so far my RX8 is running as if my foot is OFF the brakes. Telling my friends about this experience with K&N.
33-2284 K&N 33-2284 Replacement Air Filter
List Price: $94.09
Your Price: $60.99