2003-2013 Cummins 5.9L/6.7L Differential Cover Combo Pack Front AA14-9.25 / Rear AA14-11.25 (1061827)Features: Front Cover fits AA 14 9. 25 Rear Cover fits AA 14 11. 5 Cast Aluminum Internal and external cooling fins Separate fill and drain ports Magnetic drain plugs Stainless steel allen head cap bolts and fill plugs Engineered cover design keeps oil on the gears (Rear) Deflects oil back onto the ring gear and into the pinion gear for cooler longer life (Rear) Extra capacity sump located at bottom for gears to pick up oil (Rear) Gasketless cover has