K&N parts matching Mobil MA4031 air filter

The Mobil MA4031 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
Richard A Monstein, California
Great Product, arrived in excellent condition and fit perfectly in my car.
Thomas Grieve, Texas
Since I replaced the stock Toyota air filter with the K &N filter I've seen a slight difference in fuel mileage and horse power. Slight but noticeable.
John Jones, Massachusetts
I have not used the filter yet as the old filter is still good. I am sure it will be fine as everyone that has one likes it.
33-2387 K&N 33-2387 Replacement Air Filter
List Price: $91.99
Your Price: $59.99