Question at hand is Hitch Pin and not Hitch. I have the OEM Hitch....Curt, Reese, U-haul and many others are all made by the same company: Cequent.
I have U-haul 2" and it's perfect. For less than $ 200 it's much cheper than Subaru OEM; that hitch is the small square ( 1,5" I believe) while all aftermarkets mentioned above are 2" square hitches. Google U-Haul and you will see it there!