K&N parts matching AC Delco A3231C air filter

The AC Delco A3231C 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
Charles, Los Angeles, California
Highly recommend this filter. Immediate improvement in power and increased my fuel economy by 30. 1100 miles on one tank through the desert.
Dave Fuss, Truth Or Consequences, New Mexico
Excellent air filter as always. Noticeable difference in fuel mileage of 1 I 1.2 mile per gallon after installation. I’m a hunting guide on a lot of dusty roads here in New Mexico and I know I can trust my K&N filter to keep my engine protected. Filter is easy to clean when it gets dirty. Well worth the money.
Kyle Minear, Smithville, Missouri
Quick and easy to order. Filter arrived quickly. Good price. Fit was perfect. I like that I won't need to purchase another filter ever. Early to tell but it feels like my 2018 2500hd is a bit more responsive.
33-5065 K&N 33-5065 Replacement Air Filter
List Price: $171.19
Your Price: $93.99