We only carry 100% Genuine OEM Maytronics Dolphin Replacement Parts. The Maytronics Dolphin Large Spring Cleaning Cartridge - Pack of 4 (Item 9991408-R4) is specifically designed to to fit the following Pool Cleaners:

• Dolphin Wave 75
• Dolphin Edge
• Dolphin Nautilus
• Dolphin Triton
• Dolphin Quest
• Dolphin Premier
• Dolphin Prowler 820
• Dolphin Prowler 830