Swimables SW-21-166 Pentair WhisperFlo IntelliFlo Diffuser Screws | 071660

The Swimables SW-21-166 Diffuser Screw Kit is a direct replacement for Pentair part 071660, used in WhisperFlo and IntelliFlo pumps. This precision-engineered stainless steel screw (#4-40 × 1-1/8″) secures the diffuser to the impeller housing, ensuring proper alignment, stable hydraulics, and reliable operation. Manufactured from corrosion-resistant stainless steel, it resists chemical damage, saltwater exposure, and wear from repeated service cycles. Each kit includes two screws, making it a practical solution for pump rebuilds, routine maintenance, or replacing stripped or corroded fasteners.

Highlights

• OEM-Compatible Replacement: Matches Pentair 071660 specifications, providing the correct size, thread, and length for seamless installation with no modifications.

• Maintains Pump Alignment: Properly secures the diffuser to the impeller housing, preserving hydraulic efficiency and preventing vibration, noise, and uneven wear.

• Durable Stainless Steel Build: Constructed from 18-8 stainless steel that resists rust, corrosion, and damage from harsh pool chemicals or saltwater systems.

• Precision Fitment: Manufactured to the exact #4-40 × 1-1/8″ size, ensuring reliable engagement without bottoming out or stripping pump threads.

• Convenient Service Pack: Supplied with two screws and designed for easy installation using a 3/32″ Allen hex key, simplifying pump rebuilds and field service work.

Includes

• (2) Diffuser Screws

Compatibility

• Pentair WhisperFlo Pump
• Pentair IntelliFlo Pumps

Additional Info

This guide explains the Swimables SW-21-166 diffuser screw, built to replace Pentair 071660. Learn which pumps it fits, when replacement is needed, and how to check local pricing and availability.

Compatibility With Pump Models

The SW-21-166 matches Pentair WhisperFlo and IntelliFlo pumps. Its #4-40 × 1-1/8″ thread and length provide exact OEM replacement fit.

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Replacement Timing and Maintenance

Replace diffuser screws when corroded, stripped, or missing. Using fresh SW-21-166 screws prevents misalignment and protects pump internals.

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Local Price and Stock Checks

Call ahead to confirm local stock of SW-21-166 screws. Shops may offer better pricing on multipacks or bundled hardware kits.

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