The Waterway Executive Pump, 4.0HP, 230V (3721621-1D) is a high-performance pump from Waterway Plastics, built for robust, consistent water flow in compatible spa and pool systems.

Specifications:

• Part number: 3721621-1D
• Horsepower: 4.0HP
• Voltage: 230V
• Amperage: 12.0A
• Connections: 2" intake and discharge ports
• Manufacturer: Waterway Plastics

Fits/replaces:

• Spa and pool systems originally equipped with a Waterway Executive 4.0HP, 230V pump, part 3721621-1D

Common signs you need this part:

• Pump motor is noisy, humming, or won't start
• Reduced water flow or weak circulation
• Leaking from the pump housing or seal

Returns & installation: This is an electrical component. Per our terms and conditions, electrical parts are non-returnable once installed. Please confirm your existing part number matches before ordering, and have a qualified technician perform installation.

FAQ

What voltage does this pump run on? It runs on 230V.

What size ports does it use? It uses 2" intake and discharge ports.