K&N parts matching Purolator A21351 air filter

The Purolator A21351 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Purolator air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Linda Carlyle, Albuquerque, New Mexico
Very happy with the filter and price was much less expensive than buying it locally.
RL, Canada
K&N filter fitment was excellent. Sound is more aggressive and performance is a little more spirited. K&N product are well made.
Charlie Lobosco, Ohio
I have a Fiat 500L which I like more than I thought. It's pretty peppy with the [brand] engine but we always want more. I was pointed to this air filter as a very low cost but efficient way to take in more air which results in more power (more HP). Maybe it's my imagination (there's no way to actually measure increased HP) but I'm pleased with the performance since putting in this air filter!! My Fiat seems more aggressive. I like driving it even more now!
33-5015 K&N 33-5015 Replacement Air Filter
List Price: $64.19
Your Price: $40.99