K&N parts matching GMC A3218C air filter

The GMC A3218C air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many GMC air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Dennis Thye, Galesburg, Illinois
Would definitely reorder from this company. Very happy with their K&N service.
David J. Essex, Estes Park, Colorado
Excellent service and an excellent product.
Edwin Butler, Lakeland, Florida
I have a 2012 Hyundia Sonata with a 2.4L engine. I let Lakeland Hyundia service the car every 3000 miles. We complained about the gas mileage benig around 17 to 19 in town. Lakeland Hyundia said there was nothing they could do about it. So I took matters into my hands and ordered this filter from K&N. Installed it now this Sonata is getting 25 to 27 miles to a gallon in town. We took it to Okeechobee and it got about 35 to 38 miles to a gallon on open highway. Yes this filter worked.
33-2129 K&N 33-2129 Replacement Air Filter
List Price: $77.99
Your Price: $50.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Robert, Constantine, Michigan
Purchased as a Christmas gift for a friend. Website very easy to use.
Paul Weaver, Pennsylvania
Was a gift for a friend. He and I are fans of K&N air filters.
Rick Liebersbach, Mammoth Lakes, California
Obviously easy to install as it simply replaces the old filter. I saw an increase of 1 mile per gallon - which for my 8.1 liter GMC truck was nearly a 10% boost in MPG performance. I've asked my wife for the full K&N cone shaped free air flow filter conversion kit for Christmas. If this simple replacement filter helps my MPG this much, the conversion kit to the cone shaped filter should be great. This is the second time I've converted a vehcile to K&N and I've been totally pleased each time.
33-2135 K&N 33-2135 Replacement Air Filter
List Price: $96.79
Your Price: $62.99