K&N parts matching Mann-Hummel C43121 air filter

The Mann-Hummel C43121 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Mann-Hummel air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Robert Wilson, Camano Island, Washington
Gives my sprinter based Motorhome more pep.
Maxwell Montemagno, Yonkers, New York
Fast shipping...Quick install.
Frederick M Pfeiffer, Red Wing, Minnesota
After your representative explained where to mount the air filter, it fit perfectly and am looking forward to it's performance.
33-2391 K&N 33-2391 Replacement Air Filter
List Price: $127.89
Your Price: $82.99