the sleeve getts tapped in the upper bs hole after you remove the shaft,it blocks off the oil hole if you dont put it in then when you start it you will have no oil presure.the threaded shaft goes on the back of the oil pump where the lower shaft was.

87 dodge power ram 50,35" tires,5 1/2" total lift,4.6 gears,lockers front and rear,Rancho RS5000's,custom front bumper,custom rock sliders,cct extended diff breathers,75 amp alt(40 amp stock),thorely header,K&N,wheeled hard...