Maytronics Robotic Pool Cleaner Replacement Impeller Cylinder with Screws Manufacturer Part # 9982332 Fits the Following Cleaners: Dolphin Nautilus Plus Dolphin Nautilus Dolphin Dx3 Dolphin Dx4 Dolphin Dynamic Dx6 Dolphin Deluxe 4 Dolphin Deluxe 3 Dolphin Supreme M4 Dolphin Supreme M3 Dolphin Dx3 Dolphin Dx4 Dolphin Apollo Dolphin Endeavor Dolphin Atlantis Basic Dolphin Triton Dolphin Edge Dolphin Saturn Dolphin Discovery Dolphin Triton Plus Dolphin Triton