BD's design deflects the oil back onto the ring gear and into the pinion gear for cooler longer life. Other differential covers are large and bulky resulting in lubricating oil being flung off the ring gear causing addition heat and/or wear.. Other differential covers are large and bulky resulting in lubricating oil being flung off the ring gear. BD's design deflects the oil back onto the ring gear and into the pinion gear for cooler longer life.. Differential Cover; Rear; w/AA 14 Bolt-11.5 in. Differential; Incl. Differential Cover/O-Ring Gasket/Bolt/Washer/Drain Plug/Plug -10 ORB;. BD Diesel Differential Cover - 03-15 Dodge 2500/3500 / 01-13 Chevy Duramax 2500/3500. Deflects oil back onto the ring gear and into the pinion gear for cooler longer life. BD Rear Differential Cover AA14-11.5 Dodge 2003-2018 / Chevy 2001-2018. Extra Capacity Sump Located At Bottom For Gears To Pick Up Oil. Deflects Oil Back Into Pinion Gear For Cooler Longer Life. Gasketless Cover Has Integral Reusable Vinton O-Ring. Gasketless cover has integral re-usable Viton O-Ring. Stainless steel allen head cap bolts, fill plug. Engineered Cover Design Keeps Oil On The Gears. Stainless Steel Allen Head Cap Bolts Fill Plug. Dodge (2003-up) with AA14-11.5 differential. Chevy (2001-up) with AA14-11.5 differential. DIFF COVER REAR AA 14-11.5 DODGE / CHEVY. 36 Month/150000 Mile Limited Warranty. Deflects Oil Back Onto The Ring Gear. Internal And External Cooling Fins. Magnetic Drain Plug. Differential Cover. DIFF COVER REAR

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov