Product Description

Replace Your Spa Pump Fast — Get the Right Part the First Time
Your hot tub deserves a pump that delivers. The LX 4HP 2-Speed 56-Frame Pump is a reliable, energy-efficient replacement trusted by spa owners and technicians across North America. Shop and order at Western Tub and Pool — and if you're not sure it's the right fit, we'll help you find out before you buy.
[Shop Now] [Call Us: 1-855-248-0777]
Why the LX 4HP 2-Speed Pump?
A failing pump doesn't just mean cold water — it means no jets, no circulation, and a spa that's out of commission. The LX 56WUA400-II is one of the most widely used replacement pumps in the industry, designed to restore full performance quickly and affordably.
Energy-Efficient 2-Speed Operation
Run on low speed for quiet, continuous water circulation — and switch to high speed when it's time for a full-pressure jet experience. Two speeds mean lower energy bills without sacrificing performance.
Powerful 4HP Motor
The 56-frame motor delivers consistent, high-volume water flow to keep your jets running at full pressure. Built with quality copper windings for cooler operation and longer motor life.
Direct Drop-In Replacement
With 2" MBT (male bark thread) inlet and outlet connections and a standard 56-frame footprint, this pump is engineered to replace a wide range of OEM spa pumps with minimal modification.
UL & ETL Certified
Safety-certified for residential spa use in North America. Rated for 220–240V / 60Hz electrical systems.
Technical Specifications
|
Specification |
Detail |
|---|---|
|
Horsepower |
4.0 HP |
|
Speed |
2-Speed |
|
Frame Size |
56-Frame (56Y) |
|
Voltage |
230V / 220–240V |
|
Frequency |
60 Hz |
|
Amperage (High Speed) |
12A |
|
Amperage (Low Speed) |
3.5–4.4A |
|
Inlet Size |
2" MBT (approx. 3" OD) |
|
Outlet Size |
2" MBT (approx. 3" OD) |
|
Model Number |
56WUA400-II |
|
Certifications |
UL, ETL |
|
Shipping Weight |
Approx. 43 lbs |
|
Shipping Dimensions |
Approx. 18" x 12" x 10" |
Note: Dimensions and weight are approximate. Contact us to confirm specifications for your specific installation.
Compatible Hot Tub Models & Brands
The LX 56WUA400-II is used as a direct or cross-reference replacement in many popular spa brands and models. Commonly compatible brands include:
- Strong Spas
- Dynasty Spas
- Nordic Hot Tubs
- Artesian Spas
- Marquis Spas
- Caribbean Spas
- Galaxy Spas
- Cayman Spas
- Many imported and private-label spa brands using 56-frame pump configurations
Compatible control systems typically include those manufactured by:
- Balboa Water Group (BWG)
- Gecko Alliance (MSPA-MP, IN.YE series)
- HydroQuip / Hydro-Quip
Not sure if this pump fits your spa? Check your existing part number, or call us at 1-855-248-0777 and we'll confirm compatibility before you order.
How to Order
1. Identify Your Part
Check your current pump's label for the model number, HP rating, voltage, and amp draw. If the label is unreadable, note your spa's make, model, and serial number.
2. Confirm Compatibility
Browse our online catalogue, or call 1-855-248-0777 — our team will match the right pump to your spa.
3. Place Your Order
Order online at Western Tub and Pool or by phone. We ship quickly so your spa is back up and running as soon as possible.
[Shop and Order at Western Tub and Pool]
Can't Find Your Part?
Hard-to-find parts are our specialty. If you're not sure what you need, we can help you track it down.
Send us an email at fixmytub@gmail.com with:
- Your spa's make, model, and serial number
- Your existing pump's part number (if available)
- Photos of the existing pump (especially the label and plumbing connections)
Our team will get back to you with the right recommendation — no guesswork required.
Frequently Asked Questions
How do I know if this pump will fit my hot tub?
The LX 56WUA400-II fits most hot tubs that use a 56-frame, 2-speed, 4HP pump with 2" MBT plumbing connections and a 230V / 60Hz electrical system. If you're unsure, check your existing pump's label or send us your spa's make, model, and serial number at fixmytub@gmail.com — we'll confirm the fit before you order.
What does "2-speed" mean, and why does it matter?
A 2-speed pump runs at low speed for quiet, energy-efficient water filtration and circulation, and switches to high speed for jet therapy. This setup uses significantly less electricity than running a single-speed pump continuously, reducing your monthly energy costs.
Can I install this pump myself?
Many experienced spa owners replace their own pumps. However, because this involves both plumbing and electrical connections, we recommend consulting a qualified spa technician if you're unsure. Western Tub and Pool also offers in-home assistance — call us to find out more.
What is the warranty on this pump?
Warranty terms vary. Please contact us at 1-855-248-0777 or fixmytub@gmail.com for warranty details specific to your purchase.
Do you carry other spa parts and accessories?
Yes. Western Tub and Pool carries a wide range of hot tub repair and replacement parts, including heaters, control systems, filters, jets, and more. Browse our full catalogue online or give us a call — we're happy to help.
Does Western Tub and Pool offer water care support?
Absolutely. We offer free in-home tutorials to help you maintain clear, safe water in your hot tub, swim spa, or pool. Contact us to book a session.
Get Your Spa Back Up and Running Today
Don't let a broken pump keep you out of the water. The LX 4HP 2-Speed 56-Frame Pump is in stock and ready to ship — and our team is standing by to make sure you get exactly what you need.
Shop and order at Western Tub and Pool.
[Order Now] [Call 1-855-248-0777] [Email fixmytub@gmail.com]
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