K&N parts matching Mobil MA3984 air filter

The Mobil MA3984 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
Shaun Helbig, Australia
Great filter. So much better than the paper original. I get almost 10% better mileage over my old filter. Given that the old filter was fairly dirty this does not surprise me. Better engine response than before as well. A must have for your vehicle!
Leonard Costrino, Darien Center New York
Couldn't believe how restrictive the original equipment air filter was . After installing the K&N replacement , the motor seems smoother and more responsive . The great gas mileage of my Subaru appears to have improved also .
Alexander Aleksic, Leonia, New Jersey
Great product! Increase in horsepower and fuel efficiency. I now have it in both of my vehicles.
33-2304 K&N 33-2304 Replacement Air Filter
List Price: $77.99
Your Price: $50.99