Pentair Diffuser | EQ Series Commercial Plastic Pump | 356735Z
- In stock, ready to ship
- Backordered: contact us for ETA
- SKU:
- 356735Z
-
Poolaroo Promise
- Fast Shipping — Ships in 1–2 Business Days
- 30-Day Risk-Free Returns — We Pay Return Shipping, No Restocking Fees
- Powered By People Who Care - No Faceless Conglomerate
About This Item
The Pentair 356735Z is the OEM replacement diffuser (Item No. 17) for the EQ Series Commercial Plastic Pump, covering the EQK1500, EQKT1500, EQW300, and EQWK300 models as well as 50 Hz variants.
What It Does
The diffuser channels water flow from the impeller into the pump volute, converting velocity into pressure. A cracked or worn diffuser disrupts this flow path, reducing pump efficiency and output. Confirm the part number molded or stamped on your existing diffuser matches 356735Z — or verify your pump model in the Fits Into table below — before ordering.
Specifications
| Pentair Part Number | 356735Z |
| Also Known As / Legacy Part Number | 356735 |
| Part Description | Diffuser — Item No. 17 |
| Equipment Line | EQ Series Commercial Plastic Pump |
| Quantity Included | Each |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | EQ Series Commercial Plastic Pump | EQK1500 | 15 HP and 3 HP W-series models; also fits EQK1000 50 Hz and EQK1000 EXPL PF 50 Hz |
| Pentair | EQ Series Commercial Plastic Pump | EQKT1500 | 15 HP and 3 HP W-series models; also fits EQK1000 50 Hz and EQK1000 EXPL PF 50 Hz |
| Pentair | EQ Series Commercial Plastic Pump | EQW300 | 15 HP and 3 HP W-series models; also fits EQK1000 50 Hz and EQK1000 EXPL PF 50 Hz |
| Pentair | EQ Series Commercial Plastic Pump | EQWK300 | 15 HP and 3 HP W-series models; also fits EQK1000 50 Hz and EQK1000 EXPL PF 50 Hz |
| Pentair | EQ Series Commercial Plastic Pump | EQK1000 EXPL PF, 50 Hz | — |
| Pentair | EQ Series Commercial Plastic Pump | EQK1000, 50 Hz | — |
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
EQ Series pumps span multiple horsepower ratings and configurations — diffusers are not interchangeable across HP variants. Before ordering, locate the part number molded or stamped directly on your existing diffuser and confirm it matches 356735Z. While the pump is open for diffuser service, inspect the shaft seal and impeller for wear and address them in the same service visit to avoid a repeat teardown.
