K&N parts matching Mobil AF3914 air filter

The Mobil AF3914 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Mobil air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Ralph Ferrusi, Stormville, New York
I saw a K&N ad in the NRA's American Rifleman magazine. The filter is very well made and replaced the stock filter perfectly. My car does seems peppier, but mainly I was hoping for a really noticeable increase in (the already 45-48 mpg) gas mileage. Two fill-ups have shown a 0.5 to 1.0 mpg increase nothing really to write home about -but weather/temperatures are a big factor this time of year in the Northeast, so hopefully my average summer mileage will be bumped up to the mythical 48-50+ mpg range.
Joyce Cruz, South Texas
If anyone is even thinking about purchasing a K&N air filter? DO IT. We have had them in everything from Corvette's, Camaro's, Acura's, to now our smart cars. Yes even the little cars deserve the best. If you think about it, getting three of the big box store filters and you would of purchased one K&N that will last longer then 10 regular filters. Increase of horsepower is wonderful. If your engine is a happy camper so is the rest of your vehicle and who doesn't want to breathe better. Quality? 5 stars Longevity? 5 stars Price? 10 stars, No matter what you drive K&N is the only way to go. Even the oil filters are fantastic. So take it from the old fat broad down here in south Texas, K&N all the way. And hey, the little sticker looks really cool on my back window. So do yourself a favor get-cha one of em.
Peter Marth, San Antonio, Texas
Adds some power to 2014 Smart. Was an easy install. I use K&N air filters in all my vehicles.
33-2417 K&N 33-2417 Replacement Air Filter
List Price: $85.09
Your Price: $54.99