K&N parts matching Premium Guard PA9937 air filter

The Premium Guard PA9937 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Premium Guard air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Charlie Lobosco, Ohio
I have a Fiat 500L which I like more than I thought. It's pretty peppy with the [brand] engine but we always want more. I was pointed to this air filter as a very low cost but efficient way to take in more air which results in more power (more HP). Maybe it's my imagination (there's no way to actually measure increased HP) but I'm pleased with the performance since putting in this air filter!! My Fiat seems more aggressive. I like driving it even more now!
Nichole Allison, Pflugerville, Texas
It arrived on time and packaged well. It fit perfectly and my car is running much smoother than before.
Friedolf Joetten, Bürstadt, Germany
Hat das Fahrverhalten deutlich verbessert.
33-5015 K&N 33-5015 Replacement Air Filter
List Price: $64.19
Your Price: $40.99