Pentair Sta-Rite C1-271PZ Pump Diffuser 1.5-3 HP C1271PZ

The diffuser is what turns the impeller's speed into pressure — and when its wear ring scores or its vanes erode, the pump loses prime, flow falls off, and the motor works harder for less water. The Pentair C1-271PZ (part C1-271PZ) is the genuine Sta-Rite diffuser for the 1.5 to 3 HP Max-E-Glas II, Dura-Glas II, and Max-E-Pro pumps, molded in glass-filled polypropylene with the wear ring the impeller (C105-238 series) runs against. If your pump is already open for a seal or impeller job, this is the part that decides how well it performs afterward.

🚩 PRO TIP: Always check the diffuser and impeller as a pair: a new diffuser against a worn impeller eye (or the reverse) leaves the same loose clearance that caused the pressure loss. Replace the seal plate gasket while the pump is open, too.

PRODUCT FEATURES & SPECIFICATIONS:

• Brand: Pentair Sta-Rite
• MPN: C1-271PZ (base part C1-271P)
• Type: Pump Diffuser
• Material: Glass-filled polypropylene with wear ring
• Horsepower Range: 1.5 - 3 HP pumps
• Compatibility: Pentair Sta-Rite Max-E-Glas II, Dura-Glas II, and Max-E-Pro pumps (P6E / P6RA series)
• UPC: 788379733025
• Weight: 0.58 lb

FREQUENTLY ASKED QUESTIONS:

• What are the symptoms of a worn diffuser? Lost prime, low filter pressure, reduced flow, and a pump that sounds strained. Scoring on the wear ring or eroded diffuser vanes are the visual confirmation once the pump is open.
• Does the C1-271PZ fit my Max-E-Pro? It fits the 1.5 to 3 HP Max-E-Pro, Max-E-Glas II, and Dura-Glas II pumps. Smaller models in these lines use the C1-270P diffuser instead — check the number molded on your old diffuser.
• What else should I replace while the pump is apart? The shaft seal and the seal plate gasket are the standard companions to a diffuser job — the pump is already open, and both are inexpensive insurance against a leak.

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