K&N parts matching Napa 6728 air filter

The Napa 6728 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Napa air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Jake Driskell, Wildomar, California
I would recommend this filter to any F350 drivers out there! It not only works great, but K&N sent it within 2 days. Perfect filter, and perfect service.
Michael Waddell, Pasadena, California
This is the second K&N filter for my 17yr old truck. Still runs like new.
Monica Jencks, Lake Helen, Florida
My mechanic told me to buy this filter for my truck. It costs exactly the same as the regular disposable filter from the local parts stores. I've noticed an improved performance in my truck. I like the idea that this filter is warranted for long use and that it's a clean and reuseable filter, saving on the environment.
33-2248 K&N 33-2248 Replacement Air Filter
List Price: $89.29
Your Price: $57.99