K&N parts matching AC Delco A3665C air filter

The AC Delco A3665C 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
Chris Jensen, Alameda, California
This product is another winner from K&N. I can notice a difference in my 2013 Toyota Avalon Hybrid. I am seriously considering another K&N Filter for my newly acquired 2001 BMW Z (M). Already a rocket, why not make it even more fun?
Linda Bonney, Pueblo, Colorado
Have used these filters on all of the vehicles I've ever owned and LOVE them. They work great, are easy to clean and save $ over using disposable filters, plus create less waste if you're environmentally friendly like I am. Will never use any other filter.
Dave, Denver, Colorado
This is my second K & N, first one was for the motorcycle. Hoping for an increase in performance and mileage as others report. Its hard to tell on the Camry Hybrid in the winter.
33-2381 K&N 33-2381 Replacement Air Filter
List Price: $85.89
Your Price: $55.99