This is a genuine Dana/Spicer/Mopar bolt that holds your ring gear to you carrier. These are a one time use bolts so will need to be replaced if you have your ring gear off. These will work on 60/61F 70/71 axles.
It is number 14 in the diagram.
Dana 60/61 front requires 12
Dana 70/71 rear requires 12.
Sold individually.
