K&N parts matching AC Delco A1166C air filter

The AC Delco A1166C 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
Lance Rizzuto, Williamsburg, Virginia
I have had many K&N filters. This one was for a jeep that for the first time towed a motorcycle trailer from NJ to Williamsburg Va. The Jeep ran hot towing so one of the few things I could do while do on Vacation was to get a K&N filter to help for the trip home. K&N got it to my resort the next day. It added enough power that I ran about 20° cooler. K&N, Good Stuff. Worth the price just on that one trip.
33-2018 K&N 33-2018 Replacement Air Filter
List Price: $97.99
Your Price: $62.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mike, Tappahannock, Virginia
Excellent product. The filter fit better than the OEM one. Noticed a bump up in acceleration after driving for a few days. Way better than other filter brands. Money well spent.
Allen, Palm Bay Florida
My 1999 Dodge Ram 1500 4x4 has the 5.9 litre V8 and I average 15.5 mpg. I have a factory cold air intake so I bought the K&N drop in air filter for it. After installing it I went on a short drive around town. I drove around 70 miles and my gas gauge needle never moved,showing me I for sure made a good investment by getting my K&N filter. My truck has 136,000 miles on it There are no oil leaks, it doesn't use oil and it is still a beast with 350 foot pounds of stump pulling power.
Ralph Kimmell, Ford City, Pennsylvania
Filter made a positive improvement, my old air filter did not look dirty either.
33-2084 K&N 33-2084 Replacement Air Filter
List Price: $91.89
Your Price: $58.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Daniel Saad , Royal Oak, Michigan
This is the third vehicle in which I've installed a K&N filter - always a great investment.
Kendra, Ohio
Love these filters. First thing I do when I get a new atv, car or truck is get a K&N air filter. Increased horse power and all around runs better.
Isaac, New Mexico
Installed on my 2000 Jeep XJ I6. Engine definitely feels a bit more responsive after installing this filter. Gas mileage not totally conclusive as of yet, but need more time - looks to be slightly improved (5?). And I'll never have to buy another air filter I'd say this is totally worth it for a vehicle you plan to keep around for 100k+ miles.
33-2122 K&N 33-2122 Replacement Air Filter
List Price: $102.39
Your Price: $65.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Marlin Nitso, Norco, California
Shipping was quick and I am waiting for my next road trip to check performance knowing it shall be great.
Dennis Sorensen, El Reno, Oklahoma
I am very happy with my purchase. Yes I would buy another one.
Jim Hasch, New Haven, Indiana
I have been using your products ever since they appeared on my local market scene. I love them. Period! 'Nuff said! Haha!
33-2175 K&N 33-2175 Replacement Air Filter
List Price: $90.39
Your Price: $57.99
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Gerald, Phoenix, Arizona
My info center computer states that my mpg went from 30.8 to 31.5 This is with appox. 750 miles driven. I have no info on the horsepower. But I assume it has similar positive results.
Louis Nardot, Chalus, France
Livraison rapide bonne qualité. Voiture plus performante et surtout économie non négligeables de carburants entre 1l et 1,5 litre pour 100 km . Merci kn.
Van Maris, Steven, Utrecht, Netherlands
Not the cheapest, but definitely the best. In my 13 year old diesel Volvo, I put a new K&N air filter and it got all the lost horsepowers back. :)
33-2763 K&N 33-2763 Replacement Air Filter
List Price: $81.79
Your Price: $52.99