Pentair 357149 WhisperFlo & IntelliFlo Wet End, 3 HP — Pump Housing Assembly, Genuine OEM
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The Pentair 357149 Wet End is the genuine OEM 3 HP wet-end / pump housing assembly for WhisperFlo and select IntelliFlo pumps. When the housing or volute is cracked, leaking, or worn, this restores the pump's water-handling section without the cost of a full pump replacement.
Key Features
- Genuine Pentair OEM wet end: Correct volute geometry for proper WhisperFlo/IntelliFlo flow and priming.
- 3 HP rating: Sized for the 3 HP WhisperFlo and compatible IntelliFlo applications.
- Restores water handling: Replaces a cracked or leaking housing while keeping the motor.
- Durable construction: Reinforced thermoplastic built for system pressure and long service life.
- Chemical resistant: Handles chlorine, salt, and standard pool chemistry.
Specifications
- Part Number: 357149
- Type: Wet end / pump housing assembly
- Rating: 3 HP
- Fits: Pentair WhisperFlo and select IntelliFlo pumps (3 HP)
- Brand: Pentair — genuine OEM
Frequently Asked Questions
What does the Pentair 357149 include?
The 3 HP wet-end / housing assembly for WhisperFlo and compatible IntelliFlo pumps. Confirm exactly which components ship with your unit and which of your existing parts (seal plate, impeller, hardware) transfer over.
Which pumps does it fit?
Pentair WhisperFlo and select IntelliFlo pumps rated at 3 HP. Because wet-end fitment depends on horsepower and pump family, verify your pump model and HP on the motor label before ordering.
How is this different from the 356175Z?
Both are wet ends, but for different pumps. The 357149 fits WhisperFlo and select IntelliFlo (3 HP); the 356175Z is the IntelliFlo3 wet end. Match the part to your exact pump.
When should I replace the wet end instead of the pump?
When the housing or volute is cracked or leaking but the motor still runs well. Replacing the wet end is far more economical than a complete pump.
Is this a genuine Pentair part?
Yes — genuine Pentair OEM, so it seals and flows correctly against the factory motor and seal plate.
Does it need professional installation?
Pump service is best done by a qualified professional. Disconnect power, relieve system pressure, and replace disturbed O-rings and the shaft seal during the swap.
Frequently asked questions
How do I know which pump part I need?
Pool pump families share housings but differ internally by horsepower and revision. Use the part number from the exploded parts diagram for your exact pump model rather than picking by appearance - impellers in particular are horsepower specific.
What is the part number for this pump part?
Pentair lists this pump part under part number 357149. Quote 357149 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.
Should I replace the seal at the same time?
Whenever a pump is opened up, replacing the shaft seal and the housing O-rings at the same time is standard practice. The parts are inexpensive relative to a second teardown, and old seals rarely reseat properly once disturbed.
How do I confirm this fits my equipment?
Match the part number stamped on the component you are replacing, or look it up in the parts list for your Pentair equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.
What causes this part to fail?
The usual culprits are running the pump dry, debris passing through a damaged basket, and chemical attack from unbalanced water. Fixing the underlying cause matters as much as fitting the replacement, or the new part will fail the same way.
Is there a warranty on this pump part?
It carries the standard Pentair manufacturer warranty. The terms are set by Pentair, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.