Pinion Bearing and install kit for the GM 8.6" REARS from 1999 to 2008. 2009 and up is DIFFERENT, please see our other kits for these. Top quality KOYO bearings, the same as AAM uses O.E, genuine O.E. crush sleeve and seal with top quality Motive Gear nut and gasket. This kit is PINION Parts Only, need more? please see our extensive line of kits to fit every need.  QUESTIONS? PLEASE CALL US, WE ARE HERE TO HELP, TOLL FREE 877-614-4327