Yes, those are JD QA brackets. The part numbers that were just listed are correct. You have to buy 2 of each (not sold as pairs). I had to argue with my local JD dealer owner before he would even look to see if he could order them, but it seems I always have to do that. He knows nothing about CUT's because he mostly sells small JD mowers. His original line to me when I asked if he could order them was "if it is welded to another part, you can not order it as a separate part", in other words he said I had to order the whole bucket! I asked (begged) if he could just look on the computer to see and he gave me the same line he always does "I don't know how to look up parts on the computer". So finally he got the secretary to look and surprise- I could order them (well, it was a surprise to him). Anyway, I paid $42.00 for the set of 4 mounts.
Mark