K&N parts matching Carquest 87731 air filter

The Carquest 87731 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Carquest air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mike Asselin, Guelph, Canada
Works great for my bus.
Mark Petersen, Palm Beach Gardens, Florida
Great Air Filters. I use them in all my vehicles.
Claude-Alain Ferrière, Arçon, France
Excellent qualité de filtre lavable et réutilisable.
33-2341 K&N 33-2341 Replacement Air Filter
List Price: $105.99
Your Price: $67.99
K&N Replacement Airbox
  • Low Restriction Replacement Air Box
  • High-Flow Round Air Filter
Harry Bunnell, Massachusetts
Over all a nice unit, I suggest maybe making the air box about a 1/4 of an inch narrower its a real tight fit going in and maybe shortening the tube coming off the cover and adding another rubber hose so the cover sets on easier
Ed, Ohio
I have an 05 F 350 4x4 DRW. I have noticed an increase in throttle response. The truck pulls much better than before. And I get an increase of 2 mpg at minimum or better. This is driving 80 mph and not letting off up the hills. I installed this right before a 2000 mile trip, and I wanted to get a true reading on the mileage increase and power. It's worth the $400.00
Craig Forbes, Colorado
I bought the cold air box for my 2006 Ford F350, one year ago. The filter was just taken out for the yearly cleaning. Very nice system. I have seen an increase in mileage on the highway when towing my 5th wheel. Thank you for a great product.
E-0780 K&N E-0780 Replacement Airbox
List Price: $733.99
Your Price: $404.99