Pentair Impeller 1-1/2 HP Full Rate / 2 HP Up-Rate | Challenger High Pressure Pump | 355315Z

The Pentair Impeller (355315Z) is the OEM replacement impeller for the Pentair Challenger High Pressure inground pump, rated for 1-1/2 HP Full Rate and 2 HP Up-Rate configurations.

The impeller is the rotating component that moves water through the pump by converting motor shaft energy into flow. A worn, cracked, or clogged impeller directly reduces flow rate and system pressure. Replacing it with the correct OEM impeller restores the pump to its original hydraulic performance. Match the part number stamped or molded on your existing impeller before ordering — the Challenger line spans multiple horsepower ratings, and selecting the wrong impeller will result in incorrect flow and pressure output.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

When the pump is open for an impeller replacement, inspect the shaft seal and diffuser at the same time. These components wear on the same service cycle as the impeller, and replacing them together eliminates a second teardown shortly after. Also confirm whether your Challenger is wired for Full Rate or Up-Rate operation before ordering — the 355315Z is correct for 1-1/2 HP FR / 2 HP UR; other HP configurations use different impeller part numbers.