K&N parts matching Mobil AF3978 air filter

The Mobil AF3978 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
Peter fields, Ellesmere Port, United Kingdom
Excellent service & as usual, same excellent, quality item.
Bob Shaw, Austin, Texas
Quick and easy shopping experience. I always install K&N Filters in every car I own. I've been doing it for years and the cars wear out long before the filters ever will . Thanks.
Gregg Dantin, Bay City, Texas
Filter made small but noticeable improvements in maximum power and cruising fuel economy compared to previous paper filter.
33-2273 K&N 33-2273 Replacement Air Filter
List Price: $73.29
Your Price: $46.99