I just put Moss # 021-191 in my BJ7. Working perfectly. Heres a hint. The reason that I am installing a new seal now because we just changed the ring & pinion about 2 months ago, the reason is that we did not push the seal in far enough and the metal part of the seal was wearing on the un-machined part of the collar of the pinion flange. But be careful, if you push it in too far it will not wipe on the collar at all. Dave.