K&N parts matching AC Delco A3123C air filter

The AC Delco A3123C 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
Juan Zarate, New York, New York
Excellent product!
Dean, Horsham. United Kingdom
Very impressed with this product. There was an instant improvement and response in every way and in every gear on my mazda cx7 2.3 DISI turbo.
Philip Warren, Chesterfield, Virginia
This is my second purchase (33-2279). First was put in my Subaru Forester. The performance boost was well above my expectation. This one is in my wife's Mazda CX7, which is turbo charged. The power increase startled her! Well worth the money.
33-2279 K&N 33-2279 Replacement Air Filter
List Price: $82.69
Your Price: $52.99