K&N parts matching Ford 4R3U9601AB air filter

The Ford 4R3U9601AB air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Ford air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Gary Lewis, Ballwin, Missouri
The K&N filter is far superior to my OE filter. My Mustang runs smoother now.
Earl Phares, Ontario, California
I didn't need to buy one, I already had one. I had to take my cold air intake off to pass smog and put OEM back on. Wasted money being on a retired income.
Devin Marino, Pennsylvania
I only had it for a week, but it worked good for the time that I had it.
33-2298 K&N 33-2298 Replacement Air Filter
List Price: $78.49
Your Price: $50.99