K&N parts matching Purolator A31397 air filter

The Purolator A31397 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
Brett Gale, Edmonton, Alberta
Very easy product to replace. No obvious performance improvement, but it's better than replacing a paper filter at $30 each.
Thomas McGrady, Park Ridge, Illinois
Noticeable difference in the HP output after installation.
Richard J Behney, Kettering, Ohio
I USE K&N FILTERS ON ALL OF MY CARS, GREAT FILTERS!
33-2392 K&N 33-2392 Replacement Air Filter
List Price: $84.99
Your Price: $54.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Devin Pessagno, Winnipeg, Canada
The service honestly was great, not only was the filter on sale when I purchased it but shipping was included and it got to my house in Canada in 2 days. My fuel ecocnomy has definitely gotten a bit better.
Al Hogg, Troy, Alabama
K&N is the only way to go... I have used them for years and will continue to do so.
Randall Graff, Grantsville, Utah
I have been using K&N Filters for well over a decade. The first thing I do with a new car is replace the air filter with a K&N before the first oil change. I have K&N air filers with over 125,000 miles on them, and they look like new after I clean and oil them. This purchase replaced the manufacturers air filter on my newest purchase and my wife noticed an immediate improvement in power and mileage. The filter arrived on my doorstep on the date as promised by K&N, and fit perfectly as always. Plus, this car is not an easy one to get a filter for locally, so a simple order on the K&N website and it arrived promptly. I plan to put well over 100,000 miles on this filter with a 10 year minimum life span. What I like most is when the mechanics lift my hood and see that K&N sticker on my air filter casing, you can tell they hate it because they cannot sell me an overpriced paper filter.
33-3015 K&N 33-3015 Replacement Air Filter
List Price: $86.99
Your Price: $55.99