Plastic welding, plug, cap, etc...
it's the hole on the right...

an overall pic of the intake for reference... the hole is still on the right of the black piece...
I have found various-sized plastic hole plugs there.
Used a little bit of weatherstrip adhesive to get
airtight seal. Plastic looks to be textured ABS like
most of these air duct pieces seem to use. Used
them to plug the AIR breather on my Blackwing lid.






