K&N parts matching Warner WAF4002 air filter

The Warner WAF4002 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Warner air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Larry Lewis, Rockledge, Florida
I can feel the extra pep at take off and I'm getting a little over two more miles to the gallon.
R Wallace, Searcy, Arkansas
I have been an avid K&N customer for almost twenty years. Their air filters do extract more power and/or torque from your vehicle and offer longer life via their rechargeable design. All of my vehicles now use K&N air filters. Their website however can be confusing. With my last purchase, I entered the product and promptly received a message saying my shopping basket was empty. I re-entered the data and got the same response. Apparently, that occurred due to a backorder situation and the response was not intuitive. Subsequently, I contacted their customer service and like their products, got a friendly, high quality response. Great products, great people, but less than stellar web presence.
Paul Napierala, Toledo, Ohio
Great Product, correct unit and shipped timely.
33-2323 K&N 33-2323 Replacement Air Filter
List Price: $88.99
Your Price: $56.99