If the lid on your Sta-Rite Dynamo aboveground pool pump is cracked, warped, or just not sealing right, this 354531 replacement lid is exactly what you need. It's a universal fit designed to replace the original part on a bunch of Dynamo pump models (like the DYNII-NI-3/4 HP, 1 HP, 1.5 HP, and others - check the full list in the description to be sure). It comes with a new O-ring already fitted in the groove, so you get a complete, ready-to-install seal. The lid itself is made from a sturdy, high-grade material that can handle the heat and chemicals from your pool without getting brittle or aging quickly. The outer diameter is about 6.85 inches and the inner is about 6.1 inches. Swapping it is easy: just turn off the pump, release the old lid, clean the surface, and pop this one on. It'll help restore proper pump pressure and stop leaks. Always double-check your pump's model number before ordering to make sure it's the right one!
