K&N parts matching Purepro A4278 air filter

The Purepro A4278 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
Rony, Illinois
Filter is a great product. My vehicle runs smoother and has new life to it.
Michael Oberlander, Wethersfield, Connecticut
Got the right part so far so good....thanks.
Brian Curry , Boston, Massachusetts
Not a dramatic difference, but an improvement nonetheless.
33-2031-2 K&N 33-2031-2 Replacement Air Filter
List Price: $77.99
Your Price: $50.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Thalie Barrette, Gatineau, Canada
The size of the filter was perfect. Moreover, delivery is really fast, I received my package within 24 hours after the order. Also, K&N products are durable and they are good quality.
Nick, Charlotte, North Carolina
The replacement filter fit perfectly in my air cleaner. Felt an immediate increase in accelerator response and power.
Szeles Szilard, Tux, Austria
Präzise, ??schnelle Lieferung. Das Produkt ist gut, das Auto ist dynamischer, Benzin ist weniger. Ich empfehle es jedem.
33-2075 K&N 33-2075 Replacement Air Filter
List Price: $80.09
Your Price: $51.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Raymond Plunkett, England
Excellent product with clear, but unnecessary installation instructions. Car seems to have slightly benefited from the easier breathing.
George, Denver, Colorado
It fit perfect and I noticed a big difference right away.
Jared wright, Colorado
My air filter is great. I've got it on my stock class car for rallycross in Colorado and the only thing I would want to do is maybe rep K&M as a sponsor or something. Maybe some shirts I could wear at races and on my youtube channel that I just started.
33-2232 K&N 33-2232 Replacement Air Filter
List Price: $84.29
Your Price: $53.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
33-2336 K&N 33-2336 Replacement Air Filter
List Price: $86.59
Your Price: $55.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
John Barlund, Corona, California
Very quick delivery. Will shop there again.
Glenn Scarlett, Laurel, Indiana
Don't replace your filter - Reuse it . Great instructions - Save money - Quality Product.
Jeremey, California
Great replacement.
33-2374 K&N 33-2374 Replacement Air Filter
List Price: $83.69
Your Price: $53.99