Pentair C1-271P diffuser replacement for Sta‑Rite Max‑E‑Pro inground pool & spa pumps — 7×7×3 in, OEM-compatible, US-made

Pentair C1-271P is the factory-compatible diffuser designed to restore flow balance and pump efficiency in Sta‑Rite Max‑E‑Pro inground pool and spa pumps.

This OEM-style diffuser fits a broad range of Pentair Sta‑Rite Max‑E‑Pro pump models and replaces worn or damaged diffusers to help maintain proper water circulation. Molded to the original specifications, the part matches the pump’s internal geometry and mounting points so installation is straightforward for pool service technicians and DIY owners. Dimensions are compact—7" × 7" × 3"—and the component is manufactured in the United States for consistent quality.

Which pump models will this diffuser work with?

The C1‑271P is engineered for compatibility with many Pentair Sta‑Rite Max‑E‑Pro inground pump model numbers. It covers a long list of factory part numbers used across different generations of the Max‑E‑Pro line, ensuring a proper fit where the original diffuser has degraded or been misplaced.

• Compatible models include 013001, 345077–345079 and multiple P6/5P variant numbers listed by Pentair.
• Works for both single‑ and multi‑speed Max‑E‑Pro model variants in the referenced families.
• Verify your pump’s model plate against the model list before ordering for exact fit.

How does replacing the diffuser affect pump performance?

A correctly sized diffuser restores the intended water flow path through the pump housing, reducing turbulence around the impeller and helping the pump run closer to its designed efficiency. While it doesn’t increase motor horsepower, a sound diffuser supports stable pressure and consistent circulation—important for filtration and heating systems to operate as intended.

• Reduces internal recirculation and hydraulic losses for steadier flow.
• Helps maintain designed head and flow curves when paired with a healthy impeller.
• Prevents vibration caused by cracked or misshapen diffuser parts.

What should I know about installation and dimensions?

Installation is typically straightforward: remove the pump housing to access the impeller area, swap the old diffuser for the C1‑271P, and reassemble. The compact 7" × 7" × 3" footprint matches the original OEM shape, so you should see proper alignment with existing seals and fasteners when fitted correctly.

• Exact dimensions: 7 inches long, 7 inches wide, 3 inches high for correct fitment.
• Requires basic pool pump disassembly skills and standard hand tools.
• Check O‑rings and seals during replacement and renew if worn.

What are the product origin and package details?

The diffuser is produced in the United States and shipped in compact packaging to protect the molded component. Package dimensions and weight suit standard shipping, making it easy to order single parts for repair without heavy freight logistics.

• Manufactured in the United States for consistent quality control.
• Package dimensions: 23.368 cm (H) x 12.954 cm (L) x 18.542 cm (W).
• Package weight: 0.272 kg—lightweight and simple to handle.

Who is this part for: Pool service professionals and hands‑on pool owners who need an exact OEM replacement for Pentair Sta‑Rite Max‑E‑Pro inground pumps. Choose the C1‑271P when your pump shows reduced flow, vibration, or visible diffuser damage, and confirm model compatibility from the pump nameplate before purchasing. Replacing the diffuser alongside routine checks (impeller, seals, and housing) helps restore reliable circulation without replacing the entire pump.