Pentair Impeller | WhisperFlo Pump — WhisperFlo Series | 073126Z

The Pentair 073126Z is the OEM replacement impeller for the WhisperFlo series inground pump, sized for 1/2 HP operation across the WF-2, WF-23, WFE-2, and WFK-2 models.

What It Does

The impeller is the rotating component inside the pump volute that generates water flow. When an impeller becomes worn, cracked, or clogged beyond cleaning, hydraulic performance drops and the motor runs outside its designed load range. Replacing it with the correct OEM impeller restores designed flow rates and protects the motor from overload. Confirm your pump model and HP rating before ordering — impellers are HP-specific and are not interchangeable across ratings.

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

Impellers are HP-specific — installing the wrong HP-rated impeller will cause the motor to run outside its designed load range, risking premature motor failure or reduced flow performance. Before ordering, confirm your pump's HP rating on the motor nameplate and verify it matches 1/2 HP. If the number stamped on your existing impeller differs from 073126Z, locate that number and cross-reference it with Pentair's parts documentation before purchasing.