can you help identify missing part?

[whisker]

hi guys,
i just inherited this engine .1987 mercury 150. there is a part at very bottom of engine that looks like its missing.any idea if something goes there .thanks

 

[Laddies]

Re: can you help identify missing part?

Nothing missing here's a part brekdown..http://www.mercruiserparts.com/Show...=110&bdesc=Exhaust+Manifold+and+Exhaust+Plate

 

[whisker]

Re: can you help identify missing part?

thanks so any idea what thats for. thanks