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
Alberto Rodríguez Perez, Vielha, Spain
Todo perfecto.
Dean Knight, Rudgwick, West Sussex, United Kingdom
Great product, better airflow and slight mpg increase on 2.3 disi turbo Mazda cx7.
Angelito, Virginia Beach, Virginia
I replaced my car's original paper air filter with this K&N air filter when I noticed the engine light on. The old filter was dirty with grime and small pieces of flowers. As soon as I started the engine after installation, the engine light cleared and the engine is running smoothly. I knew this filter would work well since I have one installed in one of my motorcycles for a couple of years. I installed it in my 2007 Mazda CX7 and it is a perfect fit.
33-2279 K&N 33-2279 Replacement Air Filter
List Price: $82.69
Your Price: $52.99