First real question: (I will go to Subaru on Monday if I cant get it figured out)

Background: I just purchased a saab 9-2x Aero from Detroit, and it has some rust issue that I am working on.

I was wondering what part this is. (Yes I know I should learn to read diagrams) I had to cut the end off to get a 6 sided impact driver on it. Without it I don't think I would have been able to get it off.

It came from here

I was thinking it is number 20 on the third diagram down, but I'm not sure.
Subaru Parts Warehouse
Any input would be appreciated.

I already ordered the whole assembly off e-bay for 25 bucks only to have the guy send me the power steering lines only. (Not what was in the photo)

I need the one with the nut in the lower right corner of the picture, but I have no idea what it is called or what the part number is.