
Quick overview
- Back half only This is the rear section of the tank body, not the complete housing.
- PLBC series Made for the Sta-Rite PLBC booster pump, model PLBC-178L.
- Genuine replacement Factory part L176-47P.
- Sta-Rite and Pentair The same part number appears under both names in the manufacturer listings.
- Cracks and leaks A cracked or eroded rear housing is the usual reason this part gets replaced.
- Check the o-ring The tank body seals against a separate o-ring, so plan on renewing that seal at the same time.
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Frequently bought together

PLBC Tank Body, Back Half
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Product details
The L176-47P is the back half of the tank body for the Sta-Rite PLBC series booster pump. It is the rear housing section that bolts to the front half and forms the pressure chamber the impeller runs in.
When it needs replacing
Booster pump housings fail from cracks, from erosion where flow is concentrated, and from mounting bosses that have pulled or split. Once the shell is compromised the pump loses pressure or weeps water, and no amount of resealing will hold it.
Fitment and naming
This is the back half for the PLBC series pump, model PLBC-178L. The part appears in manufacturer listings under both the Sta-Rite and the Pentair name using the same number, L176-47P, so either reference is the correct housing.
While it is apart
The two halves of the tank body seal against an o-ring. That seal takes a set once it has been compressed, so it should be renewed whenever the pump is opened rather than reused.
| Brand | Sta-Rite |
|---|---|
| Manufacturer part number | L176-47P |
| UPC | 788379739775 |
| Type | Tank body, back half |
| Part type | Pool pump part |
| Fits | Sta-Rite PLBC series booster pump, model PLBC-178L |
| Shipping weight | 1.55 lb |
| Ships | Parcel |
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