Description: This heavy - duty aluminum rear differential cover from PPE is a great upgrade for your 2003 - 2018 Ram with 5.9/6.7L Cummins and 2001 - 2019 GMC with 6.6L Duramax. It helps keep your rear differential running cool and clean. With the largest set of cast cooling fins both inside and outside the pan, it offers excellent fluid cooling. It also holds an extra three - quarter quart of fluid, giving more stamina on long hauls. The exclusive high - powered Neodymium magnet equipped fill plug keeps the fluid clean by pulling out harmful ferrous metal particles. Available in raw (138051000), brushed (138051010), and black (138051020) finishes. Features include heavy - duty aluminum construction, Neodymium magnet fill plug, internal and external cooling fins, stainless steel Allen head fasteners, brushed finish, and it's sold as a kit. It includes zinc - plated mounting bolts, 3/8 inch O - ring sealed drain plug, 1 - inch stainless steel Neodymium Magnetic sight level/fill plug with Viton O - Ring Seal, CMP - 4000 high - performance gasket, and 2 tapped ports for 1/8 and 1/4 inch temperature probes. Note: For 2003 - 2018 Cummins trucks, modifications are needed. 2001 - 2019 GM 2500HD/3500HD trucks with 14 bolt 11.5 inch rear axle, 2003 - 2018 Dodge 2500/3500 trucks with 14 bolt 11.5 inch rear axle, and 2014 - 2016 Dodge 2500HD/3500HD trucks with leaf springs (won't fit coil - spring trucks) are compatible.

Using this rear differential cover is easy. First, make sure your vehicle is compatible with the cover. If you have a 2003 - 2018 Cummins truck, you'll need to make some modifications as described. Remove the old differential cover carefully and clean the surface. Then install the new cover using the included zinc - plated mounting bolts. Fill the differential with the appropriate fluid through the 1 - inch stainless steel Neodymium Magnetic sight level/fill plug. Remember, this plug has a magnet that helps keep the fluid clean. When it comes to maintenance, check the fluid level regularly. If the fluid looks dirty, drain it using the 3/8 inch O - ring sealed drain plug and refill it. The cooling fins on the cover help keep the fluid cool, but in extreme conditions, you might want to monitor the temperature using the tapped ports for temperature probes. Also, keep an eye on the magnet in the fill plug and clean it if it has a lot of metal particles stuck to it.