2013-2018 Ram 25/3500 Differential Cover Pack (1061829)The BD Diesel Differential Cover Pack provides a complementary set of front and rear covers to enhance the performance and durability of your vehicle's axles. Both the front and rear covers are made from cast aluminum and feature both internal and external cooling fins to keep fluid temperatures down. The rear cover is engineered to deflect oil back onto the ring gear and into the pinion gear for optimal lubrication and reduced heat and wear. The rear