Front Cover fits AA 14-9.25. Rear Cover fits AA 14-11.25. Gasketless cover has integral re-usable Viton O-Ring (Rear). Deflects oil back onto the ring gear and into the pinion gear for cooler longer life (Rear).
Great quality. A great addition to your truck if you’d like to actually service the gear oil in your differentials and not kill your drivetrain with excessive heat.