K&N parts matching Mobil MA4021 air filter

The Mobil MA4021 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
G Ashworth, Florida
More power. Better MPG's, No brainer.
Joseph , Florida
Excellent service, great product, prompt delivery 5 stars. Thanks K&N
William Keller, Costa Mesa, California
Quick delivery. Filter appears to have increased the economy (gas mileage). Completely satisfied with service, purchase and ease of installation! Great product. Been using your filters for many years!
33-2378 K&N 33-2378 Replacement Air Filter
List Price: $88.69
Your Price: $56.99