Redesigned front/rear diff bulkhead block set produced from rigid & tough synthetic composite have already been strengthened for better bearing sitting and enhanced tightness of differential and pinion. The bulkheads could be the mounting point for several suspension system system elements, and both housings have Labyrinth Dust Covers™ the bearings to help keep dust away. The universal design permits the diff bulkhead block to be setup both front part and backside. Comfortable using both front side and straight back differentials makes upkeep easy. Fits XB808.