92290070 & 92200060. Aqua-Flo Gecko Drain Plug & O-Ring for Flo-Master XP2, Flo-Master XP2e, and Flo-Master XP3 Series Pumps. 1/4" NPSM BSP Wing Nut Style. 13mm Thread. Unlike many others, we include the o-ring that goes with the plug. :-)
The Aqua-Flo 92290070 is made from high quality plastic for extra durability and increased lifespan. Glass reinforced plastic.
Numbers 8 & 9 in the diagram.