Pentair 356155Z diffuser for the IntelliFlo3 VSF 1.5 HP pool pumpPentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z In stock$5499
Pentair 356155Z diffuser for the IntelliFlo3 VSF 1.5 HP pool pump

Pentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z

Ask a questionMPN 356155Z
$5499
In stock

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Quick overview

  • Genuine Pentair Factory part 356155Z, the diffuser fitted to the IntelliFlo3 VSF 1.5 HP pump.
  • Model specific Built for the IntelliFlo3 VSF at 1.5 HP, not a universal diffuser.
  • Guides impeller flow The diffuser channels water leaving the impeller into the volute, which is where pressure is made.
  • Replaces a worn or cracked part Debris, age and heat crack diffusers, and the pump then loses head and moves less water.
  • Wet end service item It is a normal item to change during a seal plate or impeller rebuild.
  • Pairs with the wet end parts The seal plate kit, seal plate o-ring and impeller for the same pump are separate items.
Full description and specifications ↓

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Product details

The Pentair 356155Z is the genuine diffuser for the IntelliFlo3 VSF 1.5 HP variable speed pool pump. It is the same part the pump leaves the factory with.

What the diffuser does

The impeller flings water outward at speed. The diffuser sits over it and channels that flow into the volute, where the motion becomes usable pressure. If the diffuser cracks, wears at the impeller face or loses its shape, water short circuits back around the impeller instead of moving through the system. The pump keeps running, sometimes quietly, but flow and head drop and the filter and heater downstream get less than they need.

When to replace it

Change the diffuser when it is cracked, chipped at the eye or visibly worn from debris. It is also worth replacing while the wet end is already open for an impeller, shaft seal or seal plate job, because getting back to it later means taking the same parts off again.

What is in the box

The diffuser only. The impeller, seal plate kit and seal plate o-ring for the IntelliFlo3 VSF 1.5 HP are separate parts.

Specifications
Brand Pentair
Manufacturer part number 356155Z
UPC 788379890964
Type Pump diffuser
Fits Pentair IntelliFlo3 VSF 1.5 HP pump
Part group Wet end
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which pump does this diffuser fit?
The Pentair IntelliFlo3 VSF 1.5 HP pump. Pentair lists it as part 356155Z for that model.
Is this a genuine Pentair part?
Yes. It is the Pentair OEM diffuser, part number 356155Z.
What does the diffuser actually do?
It sits over the impeller and directs the water the impeller throws outward into the volute, converting that motion into pressure. A cracked or worn diffuser bleeds that pressure off.
Does it come with the impeller or the seal plate?
No. This listing is the diffuser only. The impeller, seal plate kit and seal plate o-ring for the same pump are sold separately.
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