Description
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 300500 | Verify fitment before ordering |
| Pentair | EQ-Series Commercial Pool and Spa Pump | EQWK 300500 | Verify fitment before ordering |
| Pentair | EQ-Series Commercial Pool and Spa Pump | EQ 5001000 | Verify fitment before ordering |
| Pentair | EQ-Series Commercial Pool and Spa Pump | EQK 5001500 | 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.
