Differential Cover; Rear-AA 14-11.5-Dodge 2003-2015/Chevy 2001-2015Differential Cover; Rear-AA 14-11.5-Dodge 2003-2015/Chevy 2001-2015Engineered Cover Design Keeps Oil On The GearsDeflects Oil Back Onto The Ring GearDeflects Oil Back Into Pinion Gear For Cooler Longer LifeExtra Capacity Sump Located At Bottom For Gears To Pick Up OilInternal And External Cooling FinsStainless Steel Allen Head Cap Bolts Fill PlugMagnetic Drain PlugGasketless Cover Has Integral Reusable Vinton O-Ring36 Month/150000 Mile Limited WarrantyOther differential covers are large and bulky resulting in lubricating oil being flung off the ring gear. BDs design deflects the oil back onto the ring gear and into the pinion gear for cooler longer life.DiffrlCover