Not only does the K&N XStream add filter area, it actually redirects airflow inside the filter to pull in more air through the side pleats for even greater performance efficiency. Cleanable and reusable, the XStream Air Flow Top filter delivers the best protection available for your engine. 
 
Washable and reusable air filter
Air filter top adds filter area
Improves air flow
Washable and reusable
 
Drop base air cleaner will not clear the electric choke assembly on Edelbrock Performer and Thunder Series carburetors. Alternate base plate or riser required to make fit