PPE HEAVY DUTY REAR ALUMINUM DIFFERENTIAL COVER RAW GM & DODGE W/ 11.5" REAR AXLE - 138051000 PPE differential covers are made in the USA from high-quality cast aluminum for strength and optimum heat dissipation. Combined with the largest set of cast cooling fins in the industry, found both inside as well as outside the pan, PPEs differential covers offer outstanding fluid cooling capabilities not often matched. This cover also holds an extra quart-and-a-half of fluid, offering a bit of added thermal stamina to the rear-end gears on those long hauls. To keep the fluid clean, PPE includes a high-powered Neodymium-magnet-equipped fill plug to pull metal particles right out of the oil before they have a chance to attack the gears and bearings. Features:  Internal and external cooling fins  Neodymium magnet equipped fill and drain plugs  Natural finish increases heat transfer. Includes:  Mounting bolts (M8 x 30 x 1.25 Allen head bolt)  3/8 inch O-Ring sealed drain plug  1 inch stainless steel magnetic sight level/fill plug with Viton O-ring seal  CMP - 4000 high performance gasket  2 tapped ports 1/8 & 1/4 inch temperature probes Available for: 2001 and newer GM 2500/3500 trucks with 14 bolt - 11.5 rear axle 2003-2013 Dodge 2500/3500 trucks with 14 bolt - 11.5 rear axle