Well I'll post a picture tommorow...it has been redesigned with the area where they seem to break thickened. Just to confirm its a known issue besides the redesign, is that my local dealership that doesn't stock spark plugs had it in stock. I'm pretty mad that this seems to be a known defect by toyota.
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The original broken shaft is on the left, the new and improved part is on the right. Note how much thicker the new one is in the area where the old one broke and how they removed the sharp corner and added taper and radius to the area.