K&N parts matching Napa 6842 air filter

The Napa 6842 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
Johnny Carter, Marlette, Michigan
Excellent filter. I have now put them on both my hd trucks. First one saved me hundreds on replacement filters by washing it.
Gabriel Mesaros, Portland, Oregon
I have bought K&N filters in the past as well, so this time I decided to try one for my semi-truck. After installing it, I noticed the truck breathes better, and has a different sound. I drive through some pretty dusty areas sometimes, and the paper filters couldn't do it. They would get dirty, then I would have had to sort of wait until the interval was out in order to replace it. This filter, however, I can clean and wash whenever I go home, if it's necessary. Great product.
James Churchill, Saskatoon, Sk, Canada
This is an excellent HD filter. I use it on my 08 Peterbilt 386 with ISX cummins in it. With the restriction gauge, my old paper filter pulling hard, read about 5 and with the new K&N filter, it is at 2.5. It seems the engine receives better, non-restricted air, then with the paper filter. I just have 5000 miles since i put it in, but i am very happy with it. Thanks for a very fine product. James.
38-2022S K&N 38-2022S Replacement Air Filter-HDT
List Price: $239.99
Your Price: $178.99