This pump has a smaller low-speed amp and RPM rating than a standard pump.
It is commonly used on Barefoot Spas/Strong Spas that run the low speed continuously since there are no programmed filter cycles or circ pump.
Motor Voltage
230v
Speed
2 Speed (2-Spd)
Motor Amperage/Wattage
12.0A/1.0A
Horsepower
4.0hp
Manufacturer
Lingxiao (LX) Pump
Pump Model
56WUA
Suction Pipe Size
2"
Suction Connection Type
Male Buttress Thread (mbt)
Suction Style
Center
Discharge Pipe Size
2"
Discharge Connection Type
Male Buttress Thread (mbt)
Discharge Style
Side
Motor Frame
56 Frame Thru-Bolt
The 56WUA400-2/6 is a high-performance, 4.0 HP dual-speed spa pump manufactured by LX Water Technology (Guangdong Lingxiao).
It is specifically engineered for North American hot tubs, utilizing an energy-efficient 2-Pole/6-Pole motor design.
This pump is widely used by major spa brands, often as an OEM component or a primary replacement for high-demand hydrotherapy systems.
Hot Tub Manufacturers Using This Pump
The 56WUA400-2/6 is a standard or recognized replacement for various models from the following manufacturers:
Jacuzzi Spas: Frequently used as a replacement for Theramax models (e.g., 6500-352, 6500-365).
Sundance Spas: Often utilized in models like the Cameo, Optima, and Marin (replaces part numbers such as 6500-367S).
Arctic Spas: Often listed as "Arctic Pump #2, 3, or 4" in specific configurations.
Cal Spas: Commonly integrated into their large-frame jet systems.
Vita Spas: Specifically noted as a replacement for 4 HP Power-Flo models.
Barefoot Spas: Used in specific 230V, 4-wire configurations.
Pinnacle Spas: Model PS630 utilizes this pump assembly.
Watkins / Hot Spring Spas: Identified as a compatible high-efficiency option for some of their configurations.
Key Technical Specifications
Specification
Detail
Manufacturer
LX Water Technology (Lingxiao)
Horsepower
4.0 HP (often "uprated" to 5HP–7HP by spa makers)
Voltage
230V
Amperage
12.0A (High) / 1.0A (Low)
Frame Size
LX56 (Large Frame)
Low Speed RPM
1150 RPM (Energy Efficient)
Inlet/Outlet
2" MBT (approx. 3.1" outside diameter)
Flow Rate
Approximately 202–203 GPM
Compatibility and Replacement Notes
Dual Functionality: Its advanced 2-Pole/6-Pole design allows it to handle both powerful high-speed massage and ultra-efficient low-speed filtration, often eliminating the need for a separate circulation pump.
Universal Replacement: It can serve as a substitute for other major 56-frame pumps, including the Waterway Executive 56 and Aqua-Flo XP2E.
Base Variations: Standard models come with a permanently affixed, welded steel mounting bracket. If your original pump uses a sliding or removable clamp-style base, ensure you select the "NF" (No Feet) version for compatibility.
