ATIE PoolSupplyTown Heavy Duty Diaphragm with Retaining Ring W81600 Fits Zodiac Baracuda G3 G4 Pool Cleaner Diaphragm W69698 Fits Zodiac Baracuda G3, and G4 pool cleaner It also fits Baracuda Zoom, Ranger, Wahoo Comes with retaining ring part No. W81600