Sta-Rite Impeller, 1/2 HP Full Rate and 3/4 HP Up Rate In stock$8499
Quick overview
- Covers two ratings The same impeller serves 1/2 HP full rate and 3/4 HP up rate pumps.
- Sta-Rite part C105-92PS The factory reference for this impeller.
- Sets the pump curve The impeller, not the motor label, is what determines how much water the pump actually moves.
- Worn vanes cost flow Grit passing through opens the vane clearances, so the pump runs at full speed while moving less water.
- Debris blocks it Small stones and hair pack into the vanes and mimic a worn impeller, so inspect before replacing.
- Plan for a shaft seal The impeller comes off the motor shaft, which exposes the shaft seal, and a disturbed seal rarely reseats.
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Product details
The Sta-Rite C105-92PS is the pump impeller for 1/2 horsepower full rate and 3/4 horsepower up rate pumps.
Full rate and up rate
The two ratings on this part are not a mistake. Manufacturers build a single pump body in full rate and up rate versions, and the impeller is what tells them apart. An up rate pump wears a higher horsepower number for roughly the same work, so when you order an impeller you have to match the rating on the pump rather than just the horsepower on the label.
What a tired impeller looks like
Impellers wear from the inside out. Sand and grit passing through the vanes gradually widen the clearances until the pump spins at full speed while moving noticeably less water. The symptoms are weak returns, low filter pressure and a suction cleaner that has gone sluggish, with a motor that still sounds perfectly healthy. Debris packed into the vanes produces the same result but arrives suddenly, so always look through the vanes before deciding the part is worn out.
Doing the job
Getting the impeller off means separating the seal plate and pulling it from the motor shaft, which exposes the shaft seal. A seal that has been disturbed seldom reseats reliably, so order one alongside the impeller and change both together rather than chasing a drip a week later.
| Brand | Sta-Rite |
|---|---|
| Manufacturer part number | C105-92PS |
| UPC | 788379734725 |
| Type | Pump impeller |
| Rating | 1/2 HP full rate, 3/4 HP up rate |
| Part type | Pool pump part |
| Shipping weight | 0.4 lb |
| Ships | Parcel |
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