Model A Oil Pump Retainer
Use this handy fitting to hold the pump in place when you remove or install the oil pan. The fitting threads in where the slotted pipe thread plug goes on the side of the block between the oil pan and the valve cover at the center. Once it is installed, you thread the bolt in the center of the fitting in against the oil pump so it won't fall out. You thread this bolt in just snug enough to hold the pump, do not over tighten or you will bust the oil pump casing. U.S.A.