I would never sand blast or bead blast anything that goes in an engine, tranny, or front/rear end. It always seems no matter how hard you try to get all of the grit off after blasting that you will miss a small bit of it that is now inside doing it's work. Spray some PB blaster, or AeroKroil on it, and wipe it down. Let is sit for a few days soaking, and wipe it down again.