Plastics Executive 56 Frame 4 HP Spa Pump 230V Hot Tubs for 3721621-1D 37216211D

Plastics Executive 56 Frame 4 HP Spa Pump 230V for Hot Tubs

This 56 frame spa pump delivers 4 HP of circulation power at 230V for hot tubs and replaces OEM part numbers 3721621-1D and 37216211D.

Overview

This 56 frame spa pump is built for hot tub and spa water circulation, moving water through the filtration and jet systems. Rated at 4 HP on 230V, it fits standard 56 frame wet ends and cross-references OEM part numbers 3721621-1D and 37216211D. A practical replacement for tired or failed pumps in residential hot tubs.

Built For Performance

• 4 HP motor for strong circulation flow
• Standard 56 frame mounting pattern
• 230V single-phase power requirement
• Cross-references OEM part numbers 3721621-1D and 37216211D
• Sealed motor housing for damp spa environments

On-The-Job Use

• Replacing a failed circulation pump in a hot tub
• Maintaining filtration and jet pressure
• Residential spa repair and upkeep
• Service techs handling pump swaps

Specs At A Glance

Good To Know

Q: Does this pump fit my existing spa plumbing? A: It uses the standard 56 frame configuration, but plumbing unions and wet end connections should be compared to your old pump. Match the frame and voltage before ordering.

Q: Can I install this pump myself? A: Spa pump replacement involves 230V wiring and water connections, so electrical work should be handled by a qualified person. Shut off power and water before starting.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.