Premature wheel bearing failures.

Also be sure to follow proper torque procedure and specs. I “believe” the stub axle should be torqued to spec with weight off wheel. This also sets preload on bearings, remember it’s two tapered bearings in the hub. Much like the ones on our A bodies. The stub axle will be what sets that pre load by clamping the two tapered bearings towards one another when torqued to spec. Not saying it’s not just bad parts. I had an 04 4wd and had issues with items like this and I made a vow that if I buy another truck it’ll be at least 3/4 ton, the running gear is beefier.