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.
These high quality American made urethane bushings replace worn out parts addressing noise and providing an improved road feel. Bushings listed may fit more than one vehicle type. Dodge/Ram 2500/3500...