Product Overview

Pentair Impeller Assembly, 5 HP, WhisperFloXF® / Max-E-Pro XF® Replacement | 400023Z

Restore proper flow and performance to your high-horsepower pump with the Pentair 400023Z Impeller Assembly. This 5 HP impeller is a direct replacement part used in select Pentair WhisperFloXF® and Sta-Rite Max-E-Pro XF® pump models. If your pump is noisy, moving less water, or showing signs of internal wear, replacing a worn impeller is one of the most effective ways to bring the pump back to spec—without replacing the entire unit.

Ideal For

Replacing a worn/damaged impeller in Pentair WhisperFloXF® pumps: XFE-20, XFJ-20, XFK-20

Replacing a worn/damaged impeller in Sta-Rite Max-E-Pro XF® pumps: XFE-20, XFJ-20, XFK-20

Service repairs where you want a genuine OEM replacement part number match (400023Z)

Key Features

Genuine replacement impeller assembly for 5 HP WhisperFloXF® / Max-E-Pro XF® applications

For Use With: WhisperFloXF® XFE-20, XFJ-20, XFK-20 + Max-E-Pro XF® XFE-20, XFJ-20, XFK-20

Part Number: 400023Z (commonly listed as replacing/related to 400023)

Warranty listing (distributor): Pool360 lists 6-month parts warranty for this item

UPC (distributor): 788379865009

Benefits

Restores hydraulic performance: A fresh impeller helps recover flow/pressure lost to wear, debris damage, or erosion

Cost-effective repair: Fix the pump’s “heart” without replacing the full pump assembly

Prevents repeat issues: Replacing a compromised impeller can reduce strain on seals and internal components (especially after cavitation or debris ingestion)

Specifications

Warranty & Compatibility

Compatibility & Return-Prevention Notes (Important)

• Match your pump model exactly: this impeller is listed for WhisperFloXF® XFE-20 / XFJ-20 / XFK-20 and Max-E-Pro XF® XFE-20 / XFJ-20 / XFK-20.
• If you’re unsure, check the pump’s parts diagram / manual or the existing impeller part number before ordering.

Customer-Facing Q&A

Q: What pumps does 400023Z fit?
A: It’s listed for Pentair WhisperFloXF® XFE-20, XFJ-20, XFK-20 and Sta-Rite Max-E-Pro XF® XFE-20, XFJ-20, XFK-20.

Q: Is this the same as 400023?
A: Many distributors list 400023Z as a replacement/related part for 400023 (check your diagram to confirm the correct revision for your pump).

Q: Is this a complete pump?
A: No—this is the impeller assembly only, used for repairs on compatible pumps.