K&N parts matching Purepro A4731 air filter

The Purepro A4731 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Purepro air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
David, Wisconsin
Works great.
Chuck Schneider, Upper Black Eddy, Pennsylvania
Exact replacement.
Douglas Barclay, Henderson, Colorado
K&N filter's are a very good product for increased power and fuel ecinomy. I recently ordered one for my S-10 pickup. Have not yet installed it, it was a present for me. I have used K&N before in my S-10 Blazer and my 4-wheeler for increased power and fuel economy in both and all you have to do is clean it every so often, never throw it away just clean it and oil it and put it back in. GOOD PRODUCT. The price costs a little, but you only have to buy once then keep clean and oil every so often and your good.
33-2042 K&N 33-2042 Replacement Air Filter
List Price: $75.99
Your Price: $48.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Paul, Thorold, Ontario, Canada
I have been using K&N oil and air filters for years. I have added dual exhaust and a performance chip to my '96 Astro. I recently changed the standard K&N filter to a big cone style. My chip module is still adjusting to the extra air flow. My little 4.3L V6 is amazingly fast. I have had a number of fast cars back in the day of big cubes but not a lot of HP. Try K&N filters and you will feel the difference. I only change my oil twice a year, I don't put a lot of miles on it and I use good high mileage oil. When the oil is changed it is quite clean. K&N is the best of the best.
J D Patterson, Central Florida
Added this K&N Filter to my 2000 Safari SLE (with 80K miles) and within a tank full of fuel, picked up about 1.3 MPG and shaved a full second off my 0-60. Was an easy install, instant sound and power boost. LOVE IT. Thanks K&N.
33-2225 K&N 33-2225 Replacement Air Filter
List Price: $84.09
Your Price: $53.99