Not sure what to call it?

2002 TRP. I need the big rubber grommet that all the cables and electrical wires goes thru in the housing, below the cowling. A piece of the rubber tab came off and now it will not stay inside the housing. The hose that all the cables, etc run in is about 2-1/2" in diameter. I need to know what to call it and where to get it. Thanks for any help.

[boats.net]

It's number 19 in this diagram. http://www.boats.net/parts/search/Ya...ING/parts.html

Ordered. Thanks