Pentair Diffuser O-Ring | IntelliFlo3 / IntelliPro3 VSF Pool Pump | 356190Z

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SKU:
356190Z
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About This Item

The Pentair Diffuser O-Ring (356190Z) is the OEM replacement sealing O-ring for the diffuser assembly on the IntelliFlo3 and IntelliPro3 Variable Speed and Flow pool pumps.

The diffuser O-ring seals the joint between the diffuser and the pump housing, maintaining the hydraulic pressure differential that drives water through the impeller. A degraded or displaced O-ring at this location allows air ingestion and pressure loss, reducing pump efficiency and potentially causing the pump to lose prime. Replacing this O-ring at the first sign of air in the system — or as part of any routine diffuser service — restores the sealed flow path the pump depends on. Fits both the 1.5HP and 3.0HP configurations of the IntelliFlo3 and IntelliPro3 series.

Specifications

Pentair Part Number 356190Z
Part Type Diffuser O-Ring
Quantity Included Each (1)

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair IntelliFlo3 VSF 3.0HP — IntelliFlo3 / IntelliPro3 Series IntelliFlo3 Fits both 1.5HP and 3.0HP models
Pentair IntelliPro3 VSF 3.0HP — IntelliFlo3 / IntelliPro3 Series IntelliPro3 Fits both 1.5HP and 3.0HP models

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

 

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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