Wet bolts are bolts that have a zerk fitting on them so you can lubricate the wear points on the suspension. They come as part of a kit that includes much heavier hangers and bushings. The suspension components are marginal and can easily wear to destruction if you do a fair amount of travelling.
There have been other threads about replacing the bolts, as well as making sure the U bolts are properly tightened, and problems with the hangers that attach the springs to the frame. These are all critical suspension points that should be checked on a regular basis.
Bob
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