1. Spa Controls
2. Spa Pumps
3. Spa Packs
4. Top Sides & Wifi
5. Circulating Pump
6. Pool Pumps
7. Spa Blowers
8. UV Sanitizer
9. Ozonator
10. Chlorine/Ozone
11. Spa Heaters
12. Balboa Heaters
13. Any Size Pumps
14. Airbleeder
15. Pump Motors
16. Wet Ends & Volutes
17. Blower Motors
18. Boards & Sensors
19. Electrical Components
20. Plumbing Components
21. Air Buttons
22. Management
23. Baptismal Products
24. Spa Lights
25. Universal Spa Motors
26. Spa Massagers
27. Portable Hot Tubs
28. Filters & Testers
29. General Part List
30. Product Information
31. Manuals & Guides
32. Wiring Diagrams
33. Troubleshooting
34. Terms & Conditions
35. Limited Warranty
36. Returns, Repairs & Warranty Claim Form
37. Proper Water Chemistry
38. Watkins Heaters
39. Watkins Pumps
40. Watkins Controls
41. Sundance Controls
42. Gecko Controls
43. Balboa Controls
44. ACC Boards
45. Resale Info
Magnaflow & Patented Motor Coolers
Magnaflow-56 MS23050E Magnaflow-56 MS23050E
Our energy efficient Magnaflow pump can lower your hot tub operating costs by 75% and our patented Motor Cooler reduces the use of your spa heater as well as extending the life of your spa electric motor!
Easy to Install! For 2" x 2" Plumbing Hot Tub Pumps

Our pump motor can reduce the hot tub operating cost to $0.03 per hour (based on the USA national average cost of electricity) while pumping 59 GPM (gallons-per-minute) in filtration cycle. This energy efficient hot tub motor consumes 265 watts on low speed and 3,220 watts on high speed. Our patented motor cooler captures most of the heat generated by the spa motor and transfers it back to the water making your spa as energy efficient as possible. In addition, our patented motor cooler keeps the motor cool by radiating the water temperature to the electric motor.
Our knowledge is powered by 18 patents and over 32 years of experience designing and producing the best spa support products in the hot tub industry.

Step ()  Measure your existing pump outer thread diameter for inlet and outlet as shown in Figures A and B. Select the proper O.D. (Outer Diameter) in Figure A or Figure B by clicking the proper button below.
Magnaflow (discharge up)

[Fig. ]
Magnaflow (discharge up)
Click below if you need 3.5" Intake x 3.0" Discharge

You need Part #1690 from Table 9.
[Fig. ]
Step ()  Select the Pump Discharge Orientation that Matches Your Spa Plumbing from Figures C, D or E. (Look at your pump from the spa plumbing end, not from the electrical motor end):

Discharge Right (Suffix -3)
Magnaflow (discharge right)
[Fig. ]
Click below to select


Discharge Up (No Suffix)
Magnaflow (discharge up)
[Fig. ]
Click below to select


Discharge Left (Suffix -4)
Magnaflow (discharge left)
[Fig. ]
Click below to select

Step ()  We will automatically install the industry standard seal selected on Figure F. For corrosive spa water (with chlorine, bromine, salt, etc.) we recommend the corrosion resistant seal from Figure H. Protect your motor from your spa water!:
Industry Standard Seal (-A)
Pump Seal -A
[Fig. ]
Click below to select

Better Than Industry Standard Seal (-P)
Pump Seal -P
[Fig. ]
Click below to select

The Best Corrosion Resistant Seal (-S)
Water Chemistry Noncorrosive
Pump Seal -S
[Fig. ]
Click below to select


To Order Your Magnaflow From Table 1 or Table 4:
. Find your desired pump model number from Table 1 or Table 4 below. . Click the button to match your existing pump discharge position. . Click the button to match your desired pump seal. . Change the quantity (if needed). . If you need unions or cables for your Magnaflow pump, select them in Table 6 below. . Click 'Add to Order' button next to desired accessory and change quantity (if needed). . Go back to your desired pump; Verify the model number, discharge position and quantity are correct. . In the same row as your desired pump, click 'Add to Order' button below the quantity. . Click button to check and submit your order. . Due to variations in individual computers, our page may not display properly on your computer. When placing your order, please verify your desired pump discharge position (see Step 1 above) and desired pump shaft seal are identified on the model number in Table 1 or Table 4. All pumps ship with the "-A" (std) pump seal unless you choose the "-P" (better) or "-S" (water chemistry corrosion resistant) seal.

Click on the pump model number below to see dimensions...

Stop Wasting Money! Start Recovering Heat From Your Spa Motor!
Click here to read how our energy efficient spa pump recovers wasted heat from the motor to the spa water.
Click here to see more testimonials from some of our motor cooler customers...

Table () Test Performed at Regal Spas, October 14, 2011
Spa Model Spa Capacity Pump Model Pump Performance Motor Cooler(s)
Caesar 380 Gallons MS23050XE-MC2 59 GPM
at Low-Speed
2 MC100
Initial Water Temp Rise in Water Temp Test Duration Electricity Cost (National Average) Total Dollar Cost
74°F 4°F 6 hours $0.12 per kWHour $0.18
Using a 5.5kW Heater in the "Caesar" spa, the cost to heat the water by 4°F is $0.44.
Using the motor coolers during 6-hour filtration, we heated 380 gallons of water by 4°F for $0.18.
The spa motor coolers recovered the wasted heat from the spa pump during a 6-hour filtration needed to keep your spa water clean.
We rose the water temperature by 4°F and filtered for 6 hours at a savings of 43% when compared to a 5.5kW electric heater. The electric heater is always needed for fast heat recovery when necessary.
NOTE: The test was conducted indoors with a controlled ambient temperature of 73°F and with a Regal Spa Cover.
Table () Motor Cooler Connection Positions
Motor Cooler Right
Motor Cooler Right
[Fig. ]
Motor Cooler Up
Motor Cooler Up
[Fig. ]
Motor Cooler Left
Motor Cooler Left
[Fig. ]
When shipped, the motor cooler orientation will match the pump discharge orientation that you specify (up, left, right). The motor cooler's orientation is easily adjusted by simply loosening 4 screws and rotating the motor cooler to the desired orientation to match your spa plumbing.
Click on the pump model number below to see dimensions...

Pump weight does not include packaging material or shipping container.

To select additional Magnaflow Spa Pump parts and components,
scroll to the table below.

Table ()   Magnaflow-56 Spa Pump Unions:
Spa Plumbing
[Fig. ]
Part #1662: 2.0" Union with Nut and O-Ring
Spa Plumbing
[Fig. ]
Part #1652: 2.0" Discharge Union with Nut (NO O-Ring)
Table ()   2.0" Intake, 2.0" Discharge
Spa Plumbing
[Fig. ]
Click here for help with the spa plumbing
Spa Plumbing
[Fig. ]
Part #1652 & Part #1662
Table () Maverick Spa Pump Air Bleeder
Spa Plumbing
[Fig. ]
AB500 Pump Air Bleeder (no valve)
(Photo shows AB500 mounted on Magnaflow. Maverick and Magnaflow have the same threads.)
Spa Plumbing
[Fig. ]
Click to see Air Bleeder dimensions.


When shopping for a replacement spa pump, always ask for the original Magnaflow.

  1. The Magnaflow is designed with a unique 8-vane impeller to dampen hydraulic noise.
  2. The Magnaflow is designed to optimize spa pump performance while using the least electrical energy.
  3. The Magnaflow pump passed all Public Safety tests per UL Standard 1081.
  4. The Magnaflow pump is powered by A.O.Smith, Magnetek, Emerson, Marathon Electric, Franklin Electric, SNTech, Regal Beloit or Century motors and not by inferior quality motors. Even though motor manufacturers may have different physical motor configurations (for example, capacitors and terminals in different locations), all motors are made per our pump performance specifications. Acura Spa pumps are produced and shipped per our model numbers with any of these motor brands.
  5. The Magnaflow series has powered hundreds of thousands of spas of different brands throughout the world since its introduction in 1994.


Pump Horsepower:
(cd) Horsepower is the continuous duty output power of the motor or the pump load to the motor.
(spl) Horsepower is used by the hot tub industry (for marketing reasons??).
(bd) Horspower is the motor's maximum load (exceeding this load will burn out the motor).

Model numbers with suffix (-1) indicates the motor is single speed.

Model numbers with no suffix indicate discharge straight up.
Model numbers with suffix (-3) indicates the discharge is to the right.
Model numbers with suffix (-4) indicates the discharge is to the left.

No O.E.M. dealers or distributor discounts with limited offer prices.

All pumps are not provided with unions, unions sold separately. Unions are identified by plumbing dimensions (like 1.5" or 2.0"), but these numbers ARE NOT the physical outer pipe dimensions. These numbers indicate the waterflow volume going into and out of the pump. Please use part numbers as identified for your application.

All electrical work must be performed by a licensed electrician.
All plumbing work must meet I.A.P.M.O., UL 1563, and all local codes and regulations and must be performed by a licensed plumbing contractor.


Get rid of old fashioned hot tub pumps, stop wasting electricity today! Rejuvenate old hot tubs with our patented technology! Start transferring the heat from the motor to the spa water while the hot tub is in filtration mode. Factory direct hot tub pump.

Exploded Views & Parts List
Magnaflow Volute and Faceplate
Both Intake and Discharge have
the same threads and
outer thread dimensions.
Magnaflow 56-Frame Volute Rearview
Magnaflow 56-Frame Volute
Part #1112S (rearview)
Magnaflow Exploded View


Performance Data


Replace your old spa or hot tub pump with the latest technology from Acura Spa Systems, Inc. We have over 1.3 million spa and hot tub pumps sold and operating for the last 22 years. All of our spa and hot tub pumps are ETL listed and tested per UL Standard 1081. Our long lasting spa and hot tub pumps are the quietest, most innovative, and most energy efficient in the industry. We are the only spa pump manufacturer to sell direct to the public. Since 1987, our hot tub pumps have been powered by Magnetek Motors, A.O. Smith Motors, Emerson Motors, Marathon Electric and Franklin Electric Motors. Our pumps for many years have supplied many hot tub manufacturers such as: ThermoSpas, LifeSpas, Islander Spas, Catalina Spas, Diamante Spas, Life Spring Spas and many others.


*Free Freight only for Fedex SmartPost. Other forms of shipping incur additional shipping costs.
**Beating competitor's price: We will meet or beat any competitor's written quotation for hardware of the same capability, such as: plumbing size, voltage, motor horsepower, motor 1 or 2-speed, heater length, safety test report, etc.

A $9.95 Handling charge is applied to all orders.

All products sold per our "Terms and Conditions" found in the "Support" section of our menu.

When your order is produced, the pump motor used (A.O. Smith, Marathon Electric, etc.)
will be whatever is in stock in our factory at the time.