Redesigned front/rear diff bulkhead block set made from rigid & tough synthetic composite is strengthened for better bearing seating and improved stiffness of differential and pinion. The bulkheads are the mounting point for many suspension components, and both housings consist of Labyrinth Dust Covers the bearings to keep dirt out. The universal design allows the diff bulkhead block become installed both front and rear. Comfortable access to both front and rear differentials makes upkeep a breeze. Fits XB808.