K&N Fuel Injection Line Air Filters are a unique way to protect your high performance engine from contaminants entering through aeration holes in the fuel injection nozzles.  These filters slip onto the injector nozzle and protect the aeration hole from dust and debris.  Sold individually, these filters have a 1 1/4” outside diameter and 1 1/16” height and fit securely over 1/4” to 1/2” fuel injection nozzles.

K&N Part # E-3003 
Single Filter