You are purchasing a replacement Motor Mounting Plate O Ring (15687) for the E-60 Meyer Snow Plow Pump. This is a good deal, as the E-60 is easy to clean out. Just remove the 2 motor bolts, and the 2 Motor Mounting Plate bolts, pop out the plate, and you can clean the gunk out of the pump where it all accumulates on the bottom of the unit! O Ring and (2) two Nylite washers that go on the pump mounting bolts are included. Everything you need to get 99% of the gunk out of your E-60 unit.