[SkinnyG]

The pinion bearings are specific to the actual axle you put the Detroit Locker into.

They have nothing to do with the Detroit Locker you installed, they are what is required for your axle, which, if original, will be the bearings that your actual truck's axle required, regardless of the Detroit Locker you have or the open diff you replaced.

Excitingly, the Detroit Locket will need to come out for the pinion bearings to be installed, and the gears properly set up again. The pinion is the last thing to come out of an axle during a rebuild, and the first thing to go in.

The carrier bearings would have been pressed on to your Detroit Locker. Hopefully your installer used new bearings, and didn't try to save old bearings. They are _usually_ what your actual axle requires, but sometimes Eaton uses unique bearings for their diffs. In this case, you'll want to check with Eaton.