K&N parts matching Purolator A55378 air filter

The Purolator A55378 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Purolator air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mark R Billings, Sacramento, California
After 270k miles on my 2001 Dodge Cummins 5.9L the high performance filter keeps my truck healthy and happy. I found a small amount of dirt perhaps passing thru the filter. K&N replaced the filter for me no questions asked. If I can get another 270k out of this one with no major repairs I will be sooo happy. The truck runs like a greyhound. I've run k & n for 30 plus years from the tip of Baja, thru the Rubicon trail and glying like a maniac across Hlamis and as a born n raised Dessert Rat. I will never run any other type of filter that's never ever. K & N is a outstanding company providing serious filtration to everybody. THANK YOU FOR YOUR OUTSTANDING PRODUCT REPRESENTATION AND AN AWESOME TEAM! K&N customer 'til the end.........
Andy Gunzel, Maple Ridge, Canada
Good afternoon, guy at work recommended that I stopped using Fram air filters due to them coming apart under a hard pull with the Cummins engine. He has used the K&N filter and highly advised I get one for my 99 Dodge. I did notice a slight power increase and the engine feels more responsive so I am quite pleased with the result thus far. Thank you for your product and will pass along the info to friends, Andy.
Garrett, Indiana
Great filter. Fits perfectly and allows my truck to breathe much better than before. I've had K&N filters in all my vehicles and will continue to do so.
33-2056 K&N 33-2056 Replacement Air Filter
List Price: $137.19
Your Price: $88.99