K&N parts matching Purepro A4372 air filter

The Purepro A4372 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
Lance Rizzuto, Williamsburg, Virginia
I have had many K&N filters. This one was for a jeep that for the first time towed a motorcycle trailer from NJ to Williamsburg Va. The Jeep ran hot towing so one of the few things I could do while do on Vacation was to get a K&N filter to help for the trip home. K&N got it to my resort the next day. It added enough power that I ran about 20° cooler. K&N, Good Stuff. Worth the price just on that one trip.
33-2018 K&N 33-2018 Replacement Air Filter
List Price: $97.99
Your Price: $62.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mike, Tappahannock, Virginia
Excellent product. The filter fit better than the OEM one. Noticed a bump up in acceleration after driving for a few days. Way better than other filter brands. Money well spent.
Bryan Batsch, Gackle North Dakota
This filter installed very easy on my 2001 dodge 1500 quad cab truck with a 360 magnum. I noticed the power difference right away and my gas mileage also improved. Would highly recommend this upgrade to anyone.
Chip Lawson, Dallas, Texas
This is the second vehicle I have owned where I have purchased and installed a K&N washable filter. As before, the filter was easy to install and fit perfectly. While I have no way of knowing for sure or proving it, I think/feel the engine runs smoother and has more pick-up. I like the fact that I can wash and re-charge the filter (saves on landfill and I think is environmentally friendlier than disposable filters) and can do it whenever I want without the expense of a new filter. If the truck was new I would have invested in a K&N Cold Air Intake system. They are outrageously good!!!
33-2084 K&N 33-2084 Replacement Air Filter
List Price: $91.89
Your Price: $58.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Isaac, New Mexico
Installed on my 2000 Jeep XJ I6. Engine definitely feels a bit more responsive after installing this filter. Gas mileage not totally conclusive as of yet, but need more time - looks to be slightly improved (5?). And I'll never have to buy another air filter I'd say this is totally worth it for a vehicle you plan to keep around for 100k+ miles.
H.J. De Beer, Rustenburg, South Africa
Fast service and shipping. Thanks guys. Filter fits perfect!
Matt Lee, Reynoldsburg, Ohio
Love K&N filters. Have always bought them for my cars.
33-2122 K&N 33-2122 Replacement Air Filter
List Price: $102.39
Your Price: $65.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Terry Mulawa, Michigan
I have K&N air filters on all four of my vehicles and they all function well.
Brett Ryden, Colorado
I noticed the increase in power right away.
Jesse Walczak, Fuquay, Varina
Easy install.
33-2175 K&N 33-2175 Replacement Air Filter
List Price: $90.39
Your Price: $57.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Louis Nardot, Chalus, France
Livraison rapide bonne qualité. Voiture plus performante et surtout économie non négligeables de carburants entre 1l et 1,5 litre pour 100 km . Merci kn.
Van Maris, Steven, Utrecht, Netherlands
Not the cheapest, but definitely the best. In my 13 year old diesel Volvo, I put a new K&N air filter and it got all the lost horsepowers back. :)
Gerald, Phoenix, Arizona
My info center computer states that my mpg went from 30.8 to 31.5 This is with appox. 750 miles driven. I have no info on the horsepower. But I assume it has similar positive results.
33-2763 K&N 33-2763 Replacement Air Filter
List Price: $81.79
Your Price: $52.99