BD Diesel Differential Cover - 03-15 Dodge 2500/3500 / 01-13 Chevy Duramax 2500/3500

Engineered cover design keeps oil on the gears; Deflects oil back onto the ring gear and into the pinion gear for cooler longer life; Extra capacity sump located at bottom for gears to pick up oil; Internal and external cooling fins; Stainless steel allen head cap bolts, fill plug; Magnetic drain plug; Gasketless cover has integral re-usable Viton O-Ring; Dodge (2003-up) with AA14-11.5 differential; Chevy (2001-up) with AA14-11.5 differential