K&N parts matching Napa 6556 air filter

The Napa 6556 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-Hdt
  • Washable and Reusable
  • Easy to Clean
Scott Strange, Charlotte, North Carolina
Very hard time getting correct part number for my vehicle. Old K&N Number not cross referencing with new K&N number??? Great product, would not have gone through hassle of tracking down correct part number myself if filter wasn't worth the effort.
D Knowlton, Verona, Missouri
These are great filters. Just pop'em in and you're ready to go. They have saved us lots of money by not having to continuously buy an air filter. We bought 2 so we could swap out for a clean dry one. It's easy to clean and we've been very happy.
Terry Beebe, Louisiana
I am very pleased and very impressed. I installed this in my semi truck my fuel mileage increased dramatically I have more power and the fuel mileage has increased. The truck also runs a lot smoother . I am saving money by using less fuel I also am saving money in the long run by not having as much wear and tear on my engine from straining trying to breathe. Plus the cost of not replacing the air filter every few months.
38-2012S K&N 38-2012S Replacement Air Filter-HDT
List Price: $240.99
Your Price: $179.99