K&N parts matching AC Delco A3681C air filter

The AC Delco A3681C 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
Lou Kelley, Arkansas
Terrific air filters.
Geoff, Branson, Missouri
Absolutely Great! 4.5 MPG increase and a lot better highway performance.
Adair Moreno Matus, CDMX, Mexico
Amazing and unbelievable. With the stock oem filter, my 2013 smart car makes 400km per tank, now I having 520km per tank, same gas, same conditions, just great!
33-2417 K&N 33-2417 Replacement Air Filter
List Price: $85.09
Your Price: $54.99