Zodiac Baracuda G3 Suction Side Pool Cleaner Long-Life Diaphragm W69698 is the replacement diaphragm for the G3 cleaner. The Diaphragm opens and closes causing the G3 cleaner to hop up and down on the bottom of the pool. In the event that the cleaner isn't hopping up and down, check the diaphragm for debris or potential wear holes.