K&N parts matching Pronto PA5907 air filter

The Pronto PA5907 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Pronto air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Allan, Texas
Noticed better fuel mileage right away. I have always used K&N and always will.
Mike Peacock, Richmond , Virginia
Easy install - 5 min. and done. Thanks Ford. Ran K&N on '05 F150 for 160,000 miles - all good. Expect it will aid my Mustang. Just wish you made one for my '88 Ford Ranger SC 4x4.
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.
33-2431 K&N 33-2431 Replacement Air Filter
List Price: $93.59
Your Price: $59.99