Part # 5074-13A
Manufacturer Code 072927
Dimensions 4.1" X 3.875"
Pentair® WhisperFlo® / IntelliFlo® Pump Diffuser – 072927 (0.75–2.5 HP)
OEM Replacement Part for Pentair® Pumps
✅ Features & Benefits
✅ Genuine OEM Part – Manufactured by Pentair® for precise fit and reliable performance
✅ Optimized Water Flow – Directs water smoothly into the impeller, reducing cavitation and improving efficiency
✅ Durable Construction – Made from corrosion-resistant thermoplastic for long-lasting service
✅ Improved Performance – Enhances priming, pressure consistency, and overall pump output
✅ Easy to Install – Direct-fit design simplifies maintenance and pump rebuilds
➡️ Specifications
Pentair® Part Number: 072927
Pump Range: 0.75 HP – 2.5 HP
Compatible Motors: 56Y square flange assemblies
Material: Molded thermoplastic
Location: Installs between the volute and impeller
✅ Compatible With
Pentair® WhisperFlo® Standard & High-Performance Pumps
Pentair® IntelliFlo® VS, VF, and VST Variable Speed Pumps
⚠️ Not for use with 3 HP or higher pump models – use Pentair® part 073129 instead.
⚠️ Tech Tips & Cautions
⚠️ Always replace the diffuser o-ring (sold separately) during installation
⚠️ Inspect impeller and shaft seal for wear when replacing the diffuser
⚠️ Proper alignment is critical to prevent noise, leaks, and reduced efficiency
Hi, I'm looking for a diffuser that would fit into a Whisperflo Model WF-26 with 1.5 hp motor. Would this one fit?
Reply
Hello Rey - Part number 072927 (5074-13A) is the correct diffuser for the WF-26 Whisperflo pump.
Reply
I have low suction pressure and the dischard tank pressure is only 4psi, my impeller check OK, The diffuser looks good , need some advise.
Reply
Hello Eddie - It sounds like you have an air leak. Click here to view our guide about air leaks. Also, check the valves in front of your pump. They are a common spot for air leaks.
Reply
I'm need to replace the diffuser plate in a whishperflow pump model WFE-28 C can advise me on the part that I need
Reply
The Diffuser Assy., 3/4 - 2 1/2 Hp (072927) item #5074-13A is the correct diffuser plate for the WFE-28 Whisperflo pump.
Reply
Hello we recently purchased a new diffuser from you and we seem to have a problem with the diffuser o ring coming off and going into the basket area can you advise what the problem is
Reply
A few tips that I would advise would be to replace the o-ring if it has not yet been and use lubricant to both help seal and hold it into place.
Reply
The Most Helpful Review
1 0
(5 out of 5 stars) Holds up better than impeller
Reviewed By: Bruce P. from Berkeley, California ()
I replaced this part and the impeller in my pump after years of service, when there seemed to be a reduction in water flow. The sintered brass seal on the underside of this part had eroded under operation, and thus there was no longer a good seal against the stem of the impeller. After the replacement, the pump worked like new.
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The Most Recent Reviews
(5 out of 5 stars)
Reviewed By: Inyo Customer ()
perfect replacement
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(5 out of 5 stars) WhisperFlo Pump parts
Reviewed By: LeeD from Orlando, FL ()
Received the correct parts in a timely fashion.
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