Pentair Mounting Plate 5F | Challenger High Flow Pump | 355495Z PVC Fittings Shoes worn thin or cracked

Shoes worn thin or cracked at the edges are a common cause of a Navigator Pro or PoolVac XL that stalls

Also replace the shaft seal whenever the motor is removed for service — reinstalling an old seal against a freshly seated motor is a common cause of premature re-failure

If your Dynamo pump has lost prime

this diffuser is the direct service replacement for the hydraulic end of the pump

Replacing this O-ring at service intervals maintains a watertight seal and protects the light assembly

Pentair Mounting Plate 5F | Challenger High Flow Pump | 355495Z PVC Fittings Shoes worn thin or crackedThe Pentair Mounting Plate 5F (355495Z) is the OEM replacement mounting plate for the Pentair Challenger High Flow inground pump, specifically the 5F configuration. The mounting plate secures the motor to the pump housing, maintaining precise alignment between the motor shaft and the pump's internal components. A damaged or degraded mounting plate can compromise this alignment, leading to vibration, accelerated wear on the shaft seal, and potential