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

The Swimables SW-21-166 is a direct replacement diffuser screw compatible with Pentair WhisperFlo and IntelliFlo pumps—corresponding to part number 071660. This precision screw (#4-40 × 1-1/8″) secures the diffuser to the impeller housing, ensuring proper pump hydraulics and preventing vibration or misalignment. Manufactured from high-quality stainless steel, it resists corrosion, chemical exposure, and wear over repeated service cycles. Ideal for pump rebuilds or maintenance, it helps restore stable pump operation and extends the life of your pump components.

Highlights

• Exact OEM Replacement for 071660: Matches Pentair’s original diffuser screw specifications (size, thread, length), making it a drop-in swap without modification. 

• Secures Diffuser for Proper Flow: Maintains correct positioning between the diffuser and impeller, supporting pump efficiency and preventing wobble that can cause noise or wear.

• Stainless Steel Construction: Built from corrosion-resistant 18-8 stainless steel to withstand harsh pool chemistry, salt, and repeated maintenance.

• Thread & Length Precision: Sized at #4-40 × 1-1/8″, ensuring accurate fit without bottoming out or stripping threads.

• Easy Service Replacement: Designed for simple removal and installation using a 3/32″ Allen (hex) key—ideal for pump rebuilds or in-field repairs.

Includes

• (2) Diffuser Screws

Compatibility

• Pentair WhisperFlo Pump
• Pentair IntelliFlo Pumps

Additional Info

This section covers the Swimables SW-21-166 diffuser screw, a direct replacement for Pentair part 071660. Learn how it secures the diffuser, when to replace it, and where to find it in store.

Installing the SW-21-166 Diffuser Screw

The stainless steel screw locks the diffuser to the impeller housing. Use a 3/32″ Allen key to tighten without over-torquing.

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Troubleshooting Pump Issues

Loose or missing screws can cause vibration, noise, or misalignment. Replacing them with SW-21-166 restores pump stability and hydraulic performance.

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Buying SW-21-166 In Store

Bring your old screw or pump model for quick matching. Store staff can confirm compatibility and supply complete rebuild kits if needed.

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