Hayward SPX3021R Impeller Ring Replacement for Select Hayward Tristar, Northstar and Super Ii Pump Impeller ring replacement Fits hayward tristar pump series sp3200ee, sp3200x, sp3600 models Also fits hayward northstar pump series sp4000, sp4000x models Also compatible with Hayward Super II pump series models SP3016C, SP3021C, 3026C and also fits EcoStar pump SP3400VSPVR For 2, 2-1/2 and 3-horsepower