Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z
Pentair Pool Products and Parts

Pentair Motor Adapter 14.25" x 11.25" x 3.25" | EQ-Series Commercial Pool and Spa Pump | 356790Z

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356790Z

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About This Item

The Pentair Motor Adapter (356790Z) is the OEM replacement motor adapter for the EQ-Series Commercial Pool and Spa Pump line, designed to correctly interface the motor to the pump housing on these high-demand commercial units.

The motor adapter provides the structural and mechanical connection between the pump's wet end and the drive motor on EQ-Series commercial pumps. A damaged or worn adapter can compromise motor alignment and pump integrity — replacing it with the correct OEM part ensures proper fit and maintains the mechanical tolerances the EQ-Series is engineered to.

Specifications

Pentair Part Number 356790Z
Dimensions 14.25" x 11.25" x 3.25"
Quantity Included 1

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair EQ-Series Commercial Pool and Spa Pump EQW 300–500 Verify fitment before ordering
Pentair EQ-Series Commercial Pool and Spa Pump EQWK 300–500 Verify fitment before ordering
Pentair EQ-Series Commercial Pool and Spa Pump EQ 500–1000 Verify fitment before ordering
Pentair EQ-Series Commercial Pool and Spa Pump EQK 500–1500 Verify fitment before ordering

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.

Pro Tip

Before ordering, confirm the model designation stamped or labeled on your existing pump housing matches one of the EQ-Series model ranges listed above. Motor adapter dimensions are specific to the pump frame — ordering by model number rather than by measurement alone is the most reliable way to ensure correct fitment. Consult your equipment's installation manual or a qualified pool technician for guidance on this commercial-grade component.

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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