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
Shop all Pentair

Pentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z

Ask a questionMPN 356155Z
$5499
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

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 ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Pentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z, SKU PUR-101-3267. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Pentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z
Pentair

Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z

$5499
Pentair Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198
Pentair

Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198

$3799
Pentair WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149
Pentair

WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149

$28799
Pentair 3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S
Pentair

3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S

$78199
Pentair Lid O-Ring, 5-3/4" ID, 350013Z
Pentair

Lid O-Ring, 5-3/4" ID, 350013Z

$599
Pentair IntelliFlo3 and IntelliPro3 Pump Rebuild Seal Set Kit, 357872
Pentair

IntelliFlo3 and IntelliPro3 Pump Rebuild Seal Set Kit, 357872

$3099
Pentair Screw 1/4-20 x 1 Left Hand Thread, 071652Z
Pentair

Screw 1/4-20 x 1 Left Hand Thread, 071652Z

$599
Subtotal

Similar products

Other products people compare with this one.

Pentair 400007Z replacement strainer basket for WhisperFloXF and IntelliFloXF pumps Pentair Replacement Basket for WhisperFloXF and IntelliFloXF Pump, 400007Z$4599 Pentair 356904Z keypad relocation kit for IntelliFlo variable speed pumps, almond Pentair Keypad Relocation Kit for IntelliFlo Variable Speed Pump, Almond, 356904Z$7699 Pentair 072928Z black 3 HP diffuser assembly for WhisperFlo and IntelliFlo pumps Pentair Black WhisperFlo/IntelliFlo Diffuser Assembly 3HP, 072928Z$4199 Pentair 071734S seal kit for WFE and IntelliFlo pool pumps Pentair Seal Kit for WFE and IntelliFlo Pumps, 071734S$3599 Pentair 070927 replacement pump foot base Pentair Pump Foot Base, 070927$3999 Pentair 357199Z almond Cam and Ramp strainer lid clamp for WhisperFlo and IntelliFlo pumps Pentair Cam and Ramp Strainer Lid Clamp, Almond, for WhisperFlo and IntelliFlo Pumps, 357199Z$5099 Pentair 400006 WhisperFlo XF lid and locking ring assembly Pentair WhisperFlo XF Lid and Locking Ring, 400006$5799 Pentair 400004Z WhisperFlo XF motor base Pentair WhisperFlo XF Motor Base, 400004Z$4199 Pentair 070387Z WhisperFlo and IntelliFlo pump strainer basket Pentair OEM Replacement WhisperFlo Pump Basket, 070387Z$2199 Pentair 400010Z Whisperflo XF 3HP pump diffuser Pentair Whisperflo XF 3HP Diffuser, 400010Z$8899
Pentair 350142 orange motor spacer cap for IntelliFlo variable speed pumps Pentair Orange Motor Spacer Cap for IntelliFlo Variable Speed Pumps, 350142$2099 Pentair 073131Z 3 hp impeller for WhisperFlo WFE-12 and IntelliFlo pumps Pentair Impeller for IntelliFlo and WhisperFlo 3 HP WFE-12, 073131Z$9099 Pentair 356238Z IntelliFlo 3.0 Energy Star diffuser assembly Pentair IntelliFlo 3.0 Energy Star Diffuser Assembly, 356238Z$9499 Pentair 70429 hex head bolt for IntelliFlo and WhisperFlo pumps Pentair Hex Head Bolt for IntelliFlo VS3050/WhisperFlo, 70429$999 Pentair 353323 WhisperFlo XF diffuser screw Pentair WhisperFlo XF Diffuser Screw, 353323$899 Pentair 350336Z diffuser o-ring for WhisperFlo XF and IntelliFlo XF pumps Pentair WhisperFlo XF / IntelliFlo XF Diffuser O-Ring #2-336, 350336Z$799 Pentair 357102 molded seal plate gasket in almond for WhisperFlo pumps Pentair Molded Seal Plate Gasket for WhisperFlo, 357102$699 Pentair 400015Z 3 HP impeller assembly for IntelliFloXF pumps Pentair 3 HP IntelliFloXF VSF, VS Impeller Assembly, 400015Z$11999 Pentair 400100 almond keypad cover assembly kit for IntelliFloXF Pentair Almond Keypad Cover Assembly Kit for IntelliFloXF, 400100$21899 Pentair 356880Z IntelliFlo VSF drive kit in almond, before October 2020 Pentair IntelliFlo VSF Drive Kit, Before 10/2020, Almond, 356880Z$99299

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

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

From Pentair

Your trusted source for all things pool. Pentair

Pentair equipment

Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001 Pentair MasterTemp 400 Natural Gas Pool Heater, EC-462028 Pentair Clean & Clear Plus 420 sq ft Cartridge Pool Filter, EC-160301 Pentair IntelliConnect Control & Monitoring System with Wi-Fi, EC-523317
Shop Pentair equipment

Genuine Pentair parts

Pentair Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198 Pentair Genuine OEM High Flow Manual Air Relief Valve, 98209800 Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400 Pentair Genuine OEM MasterTemp/Max-E-Therm 6-Button Control Board Kit, 461105Z
Shop Pentair parts
Pool lighting: a backyard pool and spa lit in blue and green at nightPool water treatment: three people floating on rings in clear blue water, seen from abovePool cleaners: a toddler in flower sunglasses laughing in a yellow ring, held by her mother
Pentair makes pumps, filters, heaters, salt chlorinators, cleaners, lighting and automation for pools and spas.Shop all Pentair

Customer reviews

More from Pentair

Pentair SuperFlo VS EC-342001 1.5 HP variable speed pool pump, front view Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001$1,48900 Pentair SuperFlo EC-348190 single speed pool pump, 1 HP, 115/230V Pentair SuperFlo 1 HP Single Speed Pool Pump, 115/230V, EC-348190$74800 Pentair WhisperFlo VS EC-011533 2.6 THP variable speed pool pump, top view Pentair WhisperFlo VS 2.6 THP Variable Speed Pool Pump, 115/208-230V, EC-011533$1,79900 Pentair 262506 HiFlow 1.5 in. six way clamp style multiport valve Pentair Genuine OEM HiFlow Valve 1.5 in. 6-Way Clamp Style, 262506$20399 Pentair EC-520556 IntelliChlor 110/220V power center Pentair 110/220V IntelliChlor Salt Chlorine Generator Power Center, EC-520556$79900 Web Price Pentair 523769 IntelliChlor Plus and LT replacement sensor board Pentair IntelliChlor Plus and LT Replacement Sensor Board, 523769$39299 Pentair 350305S 3.2 kW 10 pole variable speed motor for IntelliFloXF and IntelliFlo 2 VST pumps Pentair 3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S$78199 Pentair 523735-EC IntelliChlor Plus40 salt chlorine generator cell Pentair IntelliChlor Plus40 Salt Chlorine Generator Replacement Cell, 40,000 Gallons, 523735-EC$1,81900 Web Price Pentair Rainbow 320 in-line chlorinator R171096, front view Pentair Rainbow 320 In-Line Chlorinator, R171096$14499 Pentair 190003 tank clamp kit with tension control for Clean and Clear Plus, FNS Plus and Quad DE filters Pentair Genuine OEM Clamp Kit with Tension Control, 190003$30199
Pentair IntelliChlor LT25 salt chlorine generator cell 523747-EC Pentair IntelliChlor LT25 Salt Chlorine Generator Cell, 25,000 Gallons, 523747-EC$1,14900 Pentair IntelliFlo VS+SVRS variable speed pool pump, EC-011057 Pentair IntelliFlo VS+SVRS Variable Speed Pool Pump, EC-011057$2,39900 Pentair 170145 cartridge pack for Sta-Rite System 3 S7M120, inner and outer cartridges Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S$46499 Pentair 261055 SM-20-3 2 in. side mount multiport valve kit, front view Pentair 2 in. Multiport Valve Kit for Side Mount Sand Filters, SM-20-3, 261055$29999 Pentair 523770 IntelliChlor Plus replacement controller (HMI), black Pentair IntelliChlor Plus Controller Replacement (HMI), Black, 523770$38399 Pentair 261152 SM20-2 2 in. side mount multiport valve kit for DE filters Pentair 2" Valve Kit Multiport, Side Mount DE Filters SM20-2, 261152$29799 Pentair 357149 WhisperFlo and IntelliFlo volute housing replacement kit, front view Pentair WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149$28799 Pentair MicroBrite Color LED pool light EC-620425, 12 volt, 14 watt, with 100 ft cord Pentair MicroBrite Color LED Pool Light 12 Volt, 14 Watt with 100' Cord, EC-620425$61900 Pentair 59023400 FNS Plus 48 sq ft complete DE grid assembly Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400$39399 Pentair Amerlite EC-602128 500W 120V inground pool light with stainless steel facering Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering, 500W 120V 50' Cord, EC-602128$43900 Web Price

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.
Ask your own question