Pentair Diffuser | Challenger High Pressure Pump | 355545Z Variants Check your existing unit or

Check your existing unit or equipment manual to confirm whether your system falls within this revision before placing an order

as color rings are sold individually by color

Each screw measures 1-1/4 inches in length

When the nozzle is worn

Pentair Diffuser | Challenger High Pressure Pump | 355545Z Variants Check your existing unit orThe Pentair 355545Z is the OEM replacement diffuser for the Challenger High Pressure inground pump. What It Does The diffuser channels water exiting the impeller into a controlled, decelerating flow path, converting velocity into pressure before water exits the pump volute. A cracked, worn, or mismatched diffuser disrupts this conversion, reducing pump output pressure and flow efficiency. Replacing it with the correct OEM part restores designed