K&N parts matching AC Delco A3131C air filter

The AC Delco A3131C 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
Mark Lingl, Carpentersville, Illinois
Great product, they last for a long, long time. I used one filter on 3 different cars, same model for about 15 years with 25,000/yr. Clean and re-oil, no problem.
Thomas, Bay Area
Awesome upgrade compared to the paper filter. I drive a lot for my job and I can tell you I see 3/4 mpg improvement especially as cruising speeds. Highly recommend.
Dwight, Anaheim, California
Always liked the service intervals of your products. Quick shipping, too.
33-2357 K&N 33-2357 Replacement Air Filter
List Price: $82.19
Your Price: $52.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Jon E., Shoreline, Washington
Filter rocks. Never need to get a new one once this is installed and my next purchase will be the air intake.
Jay Smith, Fresno, California
2011 Mazda6, 2.5 auto pulled 32 mpg from Fresno to San Diego, AC on, and hauling butt. I also have one in my 84 BMW 325e, 2.7 5spd. 30+ freeway, all day long.
33-2424 K&N 33-2424 Replacement Air Filter
List Price: $94.19
Your Price: $60.99