K&N parts matching Purepro A5907 air filter

The Purepro A5907 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
Rick, Arizona
When reading the reviews as applicable to late model Mustangs, many said they observed a noticeable increase in horsepower. Additionally, a slight increase in MPG was noted. I installed this filter on my new 2014 Mustang 3.7L V6. I notice smoother acceleration, but a slight decrease in MPG. I was averaging 15.5-16.5 MPG in the city. Now, I am averaging 14.2-15.5 MPG. I don't think the acceleration improvement has lead to a heavier foot, so the airflow may have decreased. Or, as I might expect, the mass airflow sensor has not adjusted to the change in filter media.
Joseph Maletta, Denver, Colorado
No problems so far!
Allan, Texas
Noticed better fuel mileage right away. I have always used K&N and always will.
33-2431 K&N 33-2431 Replacement Air Filter
List Price: $93.59
Your Price: $59.99