2nd Gear Synchronizer Outer Ring

Identifying 2nd vs 1st Gear Synchro-Ring By Teeth
^ 1st gear synchro-ring has 3 ground-down half teeth (arrow)
^ 2nd gear synchro-ring has 2 or 3 ground-down half teeth (arrow)





Identifying 2nd vs 1st Gear Synchro-Ring By Recesses
^ 1st gear synchro-ring; no recesses
^ 2nd gear synchro-ring; three recesses (arrows)