Product review (5 stars): like a brand new washer again!
I recently replaced the timer on my washer, hoping to resurrect it.  I had noticed that the agitator was barely moving the clothes around, even on the heavy wash cycles.  While basically overhauling the washer, I figured I would replace these "dogs" which go in the agitator clutch.  It's washing with a vengeance again! Booyah! =D