Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
SW-21-166 | Swimables Pentair WhisperFlo IntelliFlo Diffuser Screws | 071660
Fits these models (5)
+1 more model
Pickup, delivery and shipping times are estimates, not guarantees.
Couldn't load pickup availability
● 258 in stock30-day returns Secure checkout
Have a question about this part?
Ask about fit, specs or shipping and get an instant answer.
Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
Other parts on the same Pentair IntelliFlo VS Pump
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.
-
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.
- (2) Diffuser Screws
- Pentair WhisperFlo Pump
- Pentair IntelliFlo Pumps