Hayward SPX4000FG Drain Plug and Gasket with O-ring Mounting Plate Replacement for Select Hayward Pump and Filter Drain plug and gasket replacement Fits hayward tristar pump series sp3200ee, sp3200x and tristar waterfall pump sp3600 series Also fits hayward northstar pump series sp4000, sp4000x and max-flo ii pump sp2700x series Also compatible with Hayward Universal H-series Low NOx heaters and Booster pump model 6060 And also compatible with hayward heatpro heat pump models hp6003t, hp11003t, hp21003t, hp21203t, hp2100tco3t