Torque Tube

[Kevin in NJ]

If you are going to split the joint you will want to first check the surfaces. Before I assemble any metal to metal like that joint I lightly run a file on the surface to find and remove any dings that raise the level.

What level is the oil in the rear? What type of oil too, the proper steam cylinder oil is very thick and nasty smelling which is less likely to leak. How is the level of oil in the tranny? Is the tranny oil the same correct type oil? Has the car been lowered in the front?

This joint should not leak and should not have a gasket. The torque tube holds the pinion double bearing in place. Any space could allow that bearing (and the pinion position) to move.

If all else fails, look up a gasket material called 'The Right Stuff'.