Speed Kings Internally Vented "IV" Gas Cap is made in USA from 6061 Aluminum. With a performance look in mind. These Speed-Kings gas caps will fit all HD Models with standard screw-in style gas cap.
 
To help prevent tank splash we threaded in a Brass mesh splash filter and added a strong rubber O-ring to make a solid seal. 
 
** The "IV" Gas cap CANNOT be powder coated as it will seal up the venting hole**
 
**Aluminum gas cap does not work for Dummy side or Fuel Gauge Side**