K&N parts matching Pronto PA6109 air filter

The Pronto PA6109 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
Michael Wenzel, Choctaw, Oklahoma
Improved gas mileage by a couple of mpg on our last camping trip. Not many miles on our rig just yet but we were getting 9 mpg and now getting 11 mpg. The fit was good, just had to move the OAM foam over to the new filter.
Rob Benko, Fort St John, Canada
Fits perfect. I noticed a power increase, the turbo doesn't spoil so slow anymore. No noticeable sound increase.
Stephen Clark, Riverside, California
I always immediately swap the OEM air filters on my cars with K&N drop-in air filters and I love the reusability vs. OEM. This makes them a tremendous value over time, with enhanced performance to boot. My only complaint with this particular filter is that it did not come with the foam element required to fit the factory air box, nor did it come with literature addressing the need to remove the element from the old filter and reuse it with the new K&N filter. Due to the rectangular cutout on side of the filter box, it is not optional to run your engine without the foam element as this would cause excessive dust buildup and negate the air pressure modulation within the air intake. I nearly returned it for a refund until I read the reviews and saw how others dealt with this issue. I highly recommend that, in the future, K&N include some kind of written instructions regarding this for this particular filter. Otherwise, these filters are a great product.
E-0644 K&N E-0644 Replacement Air Filter
List Price: $178.09
Your Price: $97.99