Pentair · Pumps
Pentair WhisperFlo VS and WhisperFlo VST parts
OEM part numbers for the Pentair WhisperFlo VS and WhisperFlo VST variable speed pumps, from Pentair's installation and user's guide.
Upfront pricing · many common repairs and installations have a set price, given before any work starts
Choose a part from the list below to see its part number and details.
Parts list
No diagram for this model yet. Every part number below is checked against Pentair’s own documentation. Choose a part from the list to see its details.
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Tap any number on the drawing to see its OEM part number, which models it fits and what commonly goes wrong with it.
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Parts list
| Ref. | Part | Part no. |
|---|---|---|
| 1 | 357199 | |
| 2a | 357151 | |
| 2b | 357156 | |
| 3 | 350013Z | |
| 4 | 070387Z | |
| 5 | 070430 | |
| 6 | 072184 | |
| 7 | 070431 | |
| 8 | 071403 | |
| 9 | 357100Z | |
| 10 | 350015 | |
| 11 | 355227Z | |
| 12 | 071660Z | |
| 13 | 072927Z | |
| 14 | 071652Z | |
| 15 | 075713 | |
| 16a | 071734S | |
| 16b | 071732S | |
| 17 | 070429Z | |
| 18 | 350202 | |
| 19 | 070927 | |
| 20 | 070929 | |
| 21 | 071657Z | |
| 22 | 071406 | |
| 23 | 072183 | |
| 24 | 071131Z | |
| 25 | 192115 | |
| 26 | 357149 | |
| 27 | 073130 | |
| 28 | 356279 | |
| 29 | 356282 | |
| 30 | 356286S | |
| 31 | 356289S | |
| n1 | 075455 | |
| n2 | 357243 | |
| n3 | 356324Z | |
| n4 | 357923Z |
About the Pentair WhisperFlo VS and WhisperFlo VST
Pentair's WhisperFlo VS and WhisperFlo VST installation and user's guide (P/N 074167 Rev. A, 2022) has one replacement parts list for both pumps: the WhisperFlo strainer pot, lid, basket, seal plate and seal, the impeller (073130) and diffuser (072927Z), and the motor, drive kit and drive cover.
The 2021 pump parts catalog does not have a WhisperFlo VS/VST page, so this list comes from the guide alone.
Common problems and the parts involved
Pump will not prime
Pentair's checks: suction plumbing and valves for damage or loose connections; the strainer pot lid sealing with its o-ring in place; the pool water level; the suction line and strainer pot full of water; a dirty basket or a damaged strainer pot o-ring.
Parts: Lid, O-ring, lid, Strainer basket. Troubleshoot this
Pump fails to start
Pentair's checks: mains voltage present (fuse, breaker or GFCI), tight mains wire connections, then a locked motor. A damaged motor shaft means replacing the pump.
Parts: Motor, Motor/drive assembly. Troubleshoot this
Pump runs then stops
Over temperature or over current fault. Pentair says to clear dirt and debris from the motor fan cover; the pump restarts on its own after one minute.
Parts: Motor. Troubleshoot this
Pump is noisy
Pentair lists debris touching the fan, an overfull strainer basket, and loose mounting or pump bolts.
Parts: Strainer basket, Motor foot. Troubleshoot this
Pump runs without flow
Pentair lists a loose impeller, air in the suction line or pump, and clogged or restricted plumbing, including a partly closed valve or dirty filter on the discharge side.
Parts: Impeller, Strainer basket. Troubleshoot this
Repair or replace?
Most of these parts are replaceable on their own, which is why it matters which one has actually failed before anything is ordered. Whether a repair or a new pump makes more sense depends on what failed and the condition of the rest of the pump. Variable-Speed Pump Repair & Installation · Pool Pump Repair & Installation
Already know which part you need? Many common repairs and installations have a set price, given before any work starts. Not sure what’s wrong? The Pool Problem Finder starts from what your equipment is doing.
Set prices for common jobs
- Pump installation$225 labor
Labor prices don’t include the pump, filter or parts, which are quoted with the job. You hear the full price before any work starts.
Source
Part numbers and reference numbers: Pentair, WhisperFlo VS and WhisperFlo VST Variable Speed Pump Installation and User's Guide (P/N 074167 Rev. A (3/3/22)), accessed 2026-10-22. Pentair and WhisperFlo VS and WhisperFlo VST are trademarks of their owner and are used here only to identify the equipment. Mobile Pool Repair is not affiliated with or endorsed by Pentair.
Pentair WhisperFlo VS and WhisperFlo VST trouble?
Variable-Speed Pump Repair & Installation at your equipment pad in Queen Creek, Gilbert and Chandler and across the East Valley. Call, or text a photo of the label and the pad.