K&N parts matching Mobil MA3999 air filter

The Mobil MA3999 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
Anguel Dimitrov, Southfield, Michigan
Rock and Roll...quality filter, fits like the original one, and most important the car is running much better. I can fill when I have to accelerate...and I am sure going to save little on gas..super.
Juan Carlos Rodriguez, Bethlehem, Pennsylvania
It was a perfect fit. A little pricy, but if it meets up with its description, its worth the price. I will be ordering another one for my second car.
Clarke Hall, Cambridge, Canada
This filter is in my 2011 Jetta. I instantly noticed relief on the engine, way more air flow with little restriction. Best filter on the market and K&N is the only brand that I would suggest to put in your vehicle. Cabin filter, air filter, and oil filter.... K&N all the way . Plus, million mile warranty, can't beat that.
33-2331 K&N 33-2331 Replacement Air Filter
List Price: $79.99
Your Price: $51.99