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.
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3421221-1A | Waterway 3HP Executive Pump 2 Speed
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Waterway 3421221-1A Executive Pump is a 3 HP, two-speed spa pump built on a rugged 48-frame motor with 230 V power and 2″ intake/discharge ports. Designed for premium spa and hot tub systems, it features a large 6½-inch diameter wet end for higher head pressure—and the wet end can be rotated in 90° increments to align with varying plumbing layouts. The motor is thermally protected and equipped with Viton seals and corrosion-resistant materials (316 stainless casing, silicone carbide seals, etc.) to stand up to harsh spa environments. Whether used for high-flow jets or standard circulation, this model delivers flexibility and durability in one package.
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High-Power Dual-Speed Motor: Offers strong performance at high speed (full 3 HP) and efficient operation at low speed—ideal for circulation or jet modes.
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Large 2″ Intake & Discharge Ports: Designed with generous 2-inch male buttress thread connections (measuring approximately 3″ OD) for high flow and compatibility with existing spa plumbing.
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Rotatable Wet End Design: The wet end can be clocked every 90°, making installation and retrofits easier when space or plumbing alignment is limited.
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Advanced Seal & Casing Construction: Featuring Viton bellows, silicone-carbide shaft seals, and a 316 stainless steel casing, built for durability in chlorinated, brominated or salt environments.
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Thermally Protected Motor: Integrated thermal overload protection helps extend motor life by preventing overheating under heavy duty spa use.