
Quick overview
- Matched to the horsepower Built for 1/2 HP full rate and 3/4 HP up rate pumps, which share the same impeller and diffuser pairing.
- Works with the impeller The diffuser closes around the impeller and turns its flow into pressure, so the two must match.
- Genuine Sta-Rite Factory part number C1-216P.
- Common wear point Sand and grit passing through the pump wear the diffuser face and open up the clearance to the impeller.
- Check the impeller too A worn diffuser usually means a worn impeller, and replacing only one rarely restores full flow.
- Pool pump part Serviced from inside the pump housing with the seal plate off.
Similar products
Other products people compare with this one.
Product details
The Sta-Rite C1-216P is the pump diffuser for 1/2 horsepower full rate and 3/4 horsepower up rate pool pumps. Those two ratings describe the same hydraulics, which is why one diffuser covers both.
What the diffuser does
It wraps around the impeller and converts the velocity leaving the vanes into pressure. The clearance between the two is what makes that work, so a diffuser that has worn, cracked or lost its face costs flow everywhere downstream, at the filter, the heater and the returns.
Service notes
Grit passing through the pump is the usual cause of wear, and it wears the impeller at the same rate. Inspect both while the seal plate is off, and plan on replacing them together if either is worn.
| Brand | Sta-Rite |
|---|---|
| Manufacturer part number | C1-216P |
| UPC | 788379732912 |
| Type | Pump diffuser |
| Part type | Pool pump part |
| Fits | 1/2 horsepower full rate and 3/4 horsepower up rate pumps |
| Shipping weight | 0.4 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
Questions and answers
What people ask about this product, answered by our pool techs.





















