Redesigned front/rear diff bulkhead block set produced from rigid & tough synthetic composite have been strengthened for better bearing sitting and improved stiffness of differential and pinion. The bulkheads will be the mounting point for many suspension system components, and both housings contain Labyrinth Dust Covers the bearings to hold dirt away. The universal design allows the diff bulkhead block to be installed both front side and backside. Comfortable utilization of both front side and back differentials makes maintenance a breeze. Fits XB808.