Pentair 073128 Impeller for WhisperFlo 1 HP / Full-Rated Pumps – Whisperflo Pump Parts And Accessories

Pentair 073128 Impeller for WhisperFlo 1 HP / Full-Rated Pumps

OEM Pentair 073128 impeller fits WhisperFlo & WFE-4 / WF-4 / WF-26 1 HP pumps. Restores full flow & pressure.

Features

• Genuine Pentair impeller for WF-4, WF-26, WFE-4, WFK-4, WFDS-4, WFDS-26 models.
• Designed for full-rated and uprated 1 HP configurations.
• Precision balanced to reduce vibration and wear.
• Restores pump performance lost to wear or damage.
• OEM replacement maintains warranty and longevity.
• Lightweight ≈15 oz for easier handling.

Description

The Pentair 073128 impeller is built to restore full performance in 1 HP WhisperFlo and related pump models. Degradation of flow is typically due to erosion, corrosion, or debris damage to the impeller, which causes pressure drop, higher energy cost, and reduced filtration efficiency. Replacing it with this OEM part recovers the pump’s rated flow and pressure, ensures motor operates under less strain, and helps deliver clean water faster. It’s compatible with WF-4, WF-26, WFE-4, WFK-4, WFDS-4, WFDS-26, and newer WhisperFlo DOE-compliant series.

Pro Tip

When replacing the impeller, change the shaft seal and inspect the seal plate gasket. Clean debris from the volute before installation to avoid flow restriction. For better sealing, pair with Pentair Volute Gasket | SKU 357100Z.

Installation Tips

Turn off power and relieve water pressure before opening pump. Ensure the impeller screws/wear ring are clean. Match impeller orientation and tighten to manufacturer torque spec. Replace seals and gaskets to avoid air leaks or water bypass.