K&N parts matching AC Delco A3663C air filter

The AC Delco A3663C air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many AC Delco air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mark A Carbone, Orlando, Florida
I took a break from K&N for a year and went back to a regular filter and I see the difference and will never go back to the cheap filters. Back to stay!
Erik Kuypers, Sint-Martens-Leerne, Belgium
Perfect and fast service.
Phil , Maidstone Kent, United Kingdom
I have been using K&N filters for many years. I like that you don't have to keep replacing them every service. Also they have a better air flow over standard filters.
33-2333 K&N 33-2333 Replacement Air Filter
List Price: $79.49
Your Price: $50.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Victor Lillyman, Bonbeach, Australia
Have had these filters on my last 2 Discovery 4's and my earlier Discovery 1. Also have one in my Triumph thunderbird and think they're great. Love the fact I can just keep re using them also. Less landfill and better performance!
Rich Ellis, Calgary, Alberta
Very fast shipping, easy install and great value for money. Vehicle feels a little more lively via "the pants in the seats" dyno but not sure if I gained any horsepower. Would definitely recommend
Russ Scott, Denver, Colorado
2011 Range Rover Sport Supercharged The replacement filters were noticeable immediately. It takes less throttle to get the acceleration you want, fuel economy went up 2-3 miles per gallon and my exhaust definitely has a deeper/throaty sound. Overall the drive ability was improved, power feels like 15-18hp increase, and fuel usage had instant improvement. I have K&N's in my 2011 VW Touareg TDI and 2014 Audi S6same experience with all my vehicles!!!!!
33-2446 K&N 33-2446 Replacement Air Filter
List Price: $147.29
Your Price: $94.99