K&N parts matching AC Delco A3645C air filter

The AC Delco A3645C 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
Steve, Iowa
Awesome product. My gas mileage has gone up a bit as advertised.
Joseph Lantz, Dolan Springs, Arizona
The best air filter I've used. All of my vehicles have a K&N air filter installed. It's very dusty where I live, many dirt roads and the cleanable K&N filter saves me a ton of money over traditional air filters.
John McAfee, Bakersfield California
I have always gone straight to the source for K&N Filters. This must be like my tenth purchase from them. To my surprise this time, I ordered then a day later it was at my front door.... wow.
33-2451 K&N 33-2451 Replacement Air Filter
List Price: $84.19
Your Price: $54.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Keith Edwards, New York
Great starting piece to get more power for your car. It's like your car can breathe with no congestion.
Al Brennan, North Carolina
Perfect fit.
Brett, Georgia
Let's the engine breathe well, is way cheaper than stock filters over the life of the car, and butt dyno says I'm getting more power.
33-2482 K&N 33-2482 Replacement Air Filter
List Price: $82.19
Your Price: $52.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Wilfred Phua, Singapore, Singapore
Fits perfectly and can definitely feel the engine enjoying more fresh air.
Alan Brady, Maple Ridge, Canada
Fast delivery, easy installation, and improved horsepower with more air flow. Thanks
Bryan S Maclean, Mission Viejo, California
This is my 5th K&N filter and again it is performing better than I had expected. I just purchased a 2017 Hyundai Elantra. On the highway, I typically average 3-5mpg better than the manufactures rating. This is definitely a worthwhile investment. I would highly recommend.
33-5050 K&N 33-5050 Replacement Air Filter
List Price: $77.99
Your Price: $49.99