APPLICATION: The 58984402LF black power cord is compatible with Dolphin most models, fit for Dolphin Nautilus Plus, Nautilus, Triton Plus, M200, M400, Discovery, Saturn, Edge, Supreme M3, Supreme M4, Supreme M5, Dx3, Dx4, Apollo, S50, S100, S200, S300, S400, Triton PS, Triton PS Plus robotic pool cleaner digital power supply units. REPLACEMENT PART: This black power cord replaced the part number 58984402LF and 5898412LF. NOTE: This is model 5898412LF/58984402LF (3-prong) - NOT compatible with 5898411LF/58984401LF (2-prong). Please verify your device's model number before purchase. FUNCTION: Plug and play, the blue seal needs to be inserted by hand or tools to get it into place. Replaced the old and damaged power cord, repair and rebuild your robotic pool cleaners' power supply uint, keep your pool cleaner in it's best condition. Please note that if the power supply unit is damaged, replacing the power cord will be of no use. MATERIAL: The 58984402LF power cord is made of quality rubber and steel, treated with anti-corrosion and high temperature resistance, ensure long service life. Perfect fit for Dolphin most pool cleaner digital power supply units. If you are not sure whether it is suitable for your pool cleaner power supply model, you can contact the seller to confirm whether it is suitable. The 58984402LF black power cord is fit for Dolphin most models, for Dolphin Nautilus Plus, Nautilus, Triton Plus, M200, M400, Discovery, Saturn, Edge, Supreme M3, Supreme M4, Supreme M5, Dx3, Dx4, Apollo, S50, S100, S200, S300, S400, Triton PS, Triton PS Plus robotic pool cleaners digital power supply unit.