JEGS 50178 clamp-on breather comes with a .805 in. long rubber inlet neck and is designed to clamp onto 3/8 in.- 1/2 in. tubes and will help remove excess pressure from your crankcase, overflow tank, valve cover, or fuel cell. The blue cotton gauze filter element will subtly blend into your ride for better performance and appearance. Installation is easy by tightening the included clamp with a screwdriver.

Note: Can be stretched to fit on a 1/2 in. tube