Redesigned front/rear diff bulkhead block set created from tough, rigid composite material. Strengthened for better bearing seating and improved tightness using this differential and pinion. The bulkheads will be the mounting point for many suspension system elements. The universal design enables the diff bulkhead block become mounted at either front or back from automobile. Comfortable use of both front part and back differentials makes upkeep quite simple. Fits XB808.