lift gate

The piece of rubber along the bottom of the gate window on my 2016 subaru outback has gotten damaged. I went to parts.subaru.com but I had trouble identifying it. Can anyone assist? I suppose a follow up question is whether it is straightforward to pull the old one out and push a new one in.

We have the roof rails unlocked and have a luggage carrier on the car. Since doing this, and with the two most recent rains, I notice that there is significant leaking from our back gate window. Would this be because water is getting into the holes where the crossbars would otherwise be if not...