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
Alex Karros, Illinois
Had K&N air filters in previously owned cars. Lived up to my expectations.
Jorge L Morales Scharon, San Antonio, Texas
Very easy to install. Immediately delivered performance as per specifications I did not receive any notable efficiency in gas savings.I own a 6.2 L GMC engine. Would recommend this product to others.
Bob Lanson, Tarpon Springs, Florida
Filter was for my Infiniti G35 coupe and was installed with the help of a DIY video.
33-2031-2 K&N 33-2031-2 Replacement Air Filter
List Price: $79.99
Your Price: $51.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Bob Thompson, Idaho Falls, Idaho
Perfect fit and hopefully improves mileage but too early to tell.
Ricardo Limberti , Shelton, Connecticut
Very good product.
Michael Herbert, Delaware, Ohio
K&N is the best filter available - so good that it's used as the industry standard. No one can argue with the quality of your products.
33-2075 K&N 33-2075 Replacement Air Filter
List Price: $81.99
Your Price: $52.99
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.
Hanley, Craig, Westland, Michigan
Perfect fit on a 99 Subaru Impreza Outback Sport 2.2 MT.
GT Gennadiy , Kyiv, Ukraine
Finally I had decided to change original filter to K&N. Overall performance of 2.0 liter boxer had truelly increased and fuel consuption became more efficient. Thank you for a great product.
33-2232 K&N 33-2232 Replacement Air Filter
List Price: $86.99
Your Price: $55.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
33-2336 K&N 33-2336 Replacement Air Filter
List Price: $93.99
Your Price: $60.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Fahad Dossary, Dammam, Saudi Arabia
Amazing product .
Judy Campbell, Liberty South Carolina
I was very pleased with my item. It has already been installed and thank you very much.
John Barlund, Corona, California
Very quick delivery. Will shop there again.
33-2374 K&N 33-2374 Replacement Air Filter
List Price: $85.99
Your Price: $54.99