K&N parts matching AC Delco A2991C air filter

The AC Delco A2991C 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 Airbox
  • Low Restriction Replacement Air Box
  • High-Flow Round Air Filter
Michael, Ringgold, Georgia
Install on my 2005 Ford F350 6.0 was little over an hour. Biggest issue was the back nut on the back of the KN filter housing below the radiator fluid fill area. Very difficult to get to, but no issues on the install in general. Engine has good response, sound is about the same. Hoping to increase fuel economy but still in the testing process.
Phillip Wilkerson, Alabama
Gives my truck more power. Have not had it on long enough to see if gas mileage improves.
Timothy Bull, Fort Worth, Texas
Big improvement on accelerating. Don't know on mileage yet.only one of fuel so far. Very easy to install. Most of my driving is off road.
E-0780 K&N E-0780 Replacement Airbox
List Price: $717.29
Your Price: $395.99