K&N parts matching AC Delco A3666C air filter

The AC Delco A3666C 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
Monique Barnabas, Panama City, Panama
So far I have had a great experience with K&N. After installing my new air filter, I can definitely feel the difference in my car performance. I will highly recommend K&N and continue using such high quality product.
Chris Halcomb, Huntsville al
My gas mileage went from 24 to 27 mpg.
Enrique Gonzalez, Lodi, New Jersey
It really improved my cars performance.
33-2345 K&N 33-2345 Replacement Air Filter
List Price: $81.89
Your Price: $52.99