This is the complete 3rd. member rebuild/set up kit for 8" or 9" Ford 3rd. members. Kit includes all premium quality parts - carrier bearings and races, pinion bearings and races, pocket bearing and retainer, pinion support o-ring, pinion seal, pinion nut and crush sleeve. Specify when ordering what carrier bearing o.d. & i.d. you need, and whether or not you have a standard or big bearing pinion support.