Hayward SPX4000Z1 Diffuser O-ring Replacement Kit for Select Hayward Northstar， Ecostar and Tristar Pump<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diffuser o-ring replacement</li><li>Fits hayward northstar pump series sp4000， sp4000x， sp4015x202</li><li>Also fits hayward tristar pump series sp3200ee， sp3200x， sp36075ee， sp3250ee， sp3600</li><li>Also compatible with Hayward EcoStar pump series models SP3400VSPVR， SP3400VSP</li><li>Weighs 2-pound</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41rV-p678%2BL.jpg" noproxy>