K&N parts matching Premium Guard PA4378 air filter

The Premium Guard PA4378 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Premium Guard air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Jake Myers, Nebraska
Installed this product on my 1991 Ford F-150 and what a difference it has made. Definitely gave it more power and about 3-5 mpg better. This was a want for this truck, now a NEED for my other vehicles.
John, Little Rock, Arkansas
I went from a Fram Tough Guard air filter to this thinking it would improve my overall horsepower and MPG and boy has it ever! Within the first month my hp has increased by at least 5hp and I'm getting almost 18 mpg! Which is fairly decent for a 5.0 v8 engine. I would recommend this filter to those wanting to get the most out of their ford 1995 F150 pickup!
Michael Drake, Longboat Key, Florida
This air filter has increased the performance of my 89' F-150 and would recommend it for anyone looking to do the same.... It's great!
33-2023 K&N 33-2023 Replacement Air Filter
List Price: $85.79
Your Price: $54.99
K&N Special Order Repl Fltr
  • Designed to Increase Power
  • Million Mile Limited Warranty
Smiley Hatcher, Asotin, Washington
Very fast delivery without having to pay extra. Liked that a lot.
33-2099 K&N 33-2099 SPECIAL ORDER Repl Fltr
Your Price: $72.49