Auto plunger bracket used some, but not all, Stern pinball machines.
Please see secondary pictures for clarification of this assembly's mounting tabs. All Stern manuals show assemblies 500-9818-00, 500-9818-01 & 500-9818-02 to have no protruding mounting tabs. However some machines have auto auto plunger brackets with protuding mounting tabs. The auto plunger bracket we sell does not have protruding mounting tabs.