Product Overview

The Pentair WhisperFlo Diffuser Assembly 072927Z is a genuine Pentair OEM replacement diffuser for Pentair WhisperFlo pumps in the 0.5 HP to 2 HP range. The diffuser sits over the impeller inside the pump housing and directs water from the impeller into the volute. A cracked, worn, or damaged diffuser can reduce pump performance and flow, and replacing it is a common part of a WhisperFlo pump rebuild.

Ideal For

Pentair WhisperFlo pump repairs and rebuilds (0.5–2 HP)

Replacing a cracked, worn, or damaged diffuser

Pool service technicians servicing WhisperFlo pump wet ends

Key Features

Genuine Pentair OEM part: direct replacement under part number 072927Z.

Designed for WhisperFlo pumps from 0.5 HP to 2 HP.

Replaces the diffuser only; the pump housing, impeller and motor remain in service.

Specifications

Warranty & Compatibility

Compatibility Notes

This diffuser is listed for Pentair WhisperFlo pumps rated 0.5 HP to 2 HP. Larger WhisperFlo pumps and other Pentair pump lines may use a different diffuser. Confirm your pump model and horsepower against the Pentair parts diagram before ordering.

Installation Notes

Turn off and lock out power to the pump and relieve system pressure before servicing. Remove the motor and seal plate assembly from the pump housing to access the diffuser. Inspect the diffuser O-ring, impeller and shaft seal at the same time, and replace worn parts as needed. Professional service is recommended if you are not familiar with pump disassembly.

Customer-Facing Q&A

Q: What is the part number for this diffuser?
A: The Pentair part number is 072927Z.

Q: What is the UPC?
A: The UPC is 788379886905.

Q: Which pumps does it fit?
A: It is listed for Pentair WhisperFlo pumps from 0.5 HP to 2 HP. Confirm your exact model in the Pentair parts diagram.

Q: Is this a genuine Pentair part?
A: Yes. 072927Z is a genuine Pentair OEM replacement diffuser.