help needed to name and identify Polaris Sportsman Engine Part?

Hi All
I am hoping somebody can help me.

On the 2012 Polaris Sportsman 550 XP there is and Oval Pipe with a round sealer on it which was apparently allowing dust to be sucked into the lower part of the engines. The only reason I am aware of this is because the mechanic at the dealership told me he silicone this area to stop the dust sucking in. I have asked the dealership since been told about this but it has been denied and I have been given the big brush off.

Does anybody know what this pipe or part of the engine is called? And where on the bike it might be? I am trying to research this particular part of the bike but I really don’t know what I am looking for.

Any help would be appreciated

thanks Kim