Hayward SPX4000SA2 Seal Assembly Replacement for Select Hayward Northstar, Ecostar and Tristar Pump Seal assembly replacement Fits hayward northstar pump series models sp4015x202 Also fits hayward ecostar pump series models sp3400vspvr, sp3400vsp Also compatible with Hayward TriStar pump series models SP36075EE, SP3250EE Weighs 1-pound