These plugs are designed to block off throttle bodies when you have the intake taken apart. This will prevent debris and water from falling into your intake manifold through the throttle body. Perfect for mechanics or anyone who is constantly working on engines.
There are currently two options available. One is 40-65MM diameter, designed around the Jeep 2.5 and 4.0, but it may fit others depending on the diameter. The other size is 72-110MM designed around LS throttle bodies.
