K&N parts matching AC Delco A1256C air filter

The AC Delco A1256C 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
Larry Gallagher, Jacksonville, Florida
I had low expectations about any performance improvements in my 96 nissan hardbody from a simple air filter upgrade. I had a grin on my face when I took it out for a city/highway road test. I noted a very obvious improvement in both throttle response and acceleration. Based on the milage from the half tank of fuel I had on hand, I anticipate an overall mpg improvement as well. Best 60 bucks I've ever spent on a vehicle.
Jarrod, Madera, California
Superior product! Got this for my 2003 Nissan Frontier with the KA24DE 2.4L I4 engine. Shipping was good, came in about a week from ordering. Installation was super-basic, no special tools or anything but the best thing was the performance gain. I could feel noticiable gain to both torque and HP. I believe this product will stand up to the Million Mile Warranty!
Brian Dugan, Georgetown, South Carolina
Works great. I installed it in a 2002 Nissan Frontier (230,000 miles) and noticed an immediate improvement. My engine used to turn 3000 rpm at 70 mph, now it turns at 2800 rpm. I have to cross a steep bridge every day and I used to have to gear down to fourth, but now I can stay in fifth gear and cross it with just a slight increase of throttle. I was so impressed that I bought a K&N filter for my mother's 2005 Expedition and also noticed better performance. I wish I would have done this sooner. Over the life of my vehicle, it would have saved me a lot of money in gas and put less strain on my engine and transmission.
E-9233 K&N E-9233 Replacement Air Filter
List Price: $100.29
Your Price: $64.99