🔧 Balboa Vico Ultimax 2.0 HP 2-Speed Spa Pump – 230V 56 Frame (1016012)

Whisper-quiet dual-speed power for demanding hydrotherapy jet systems

💧 Product Overview

The Balboa Vico Ultimax (also known as the Niagara) is a 2.0 HP, 2-speed jet pump engineered by Balboa Water Group for high-performance spa and hot tub applications. Designed for the North American market at 230V/60Hz, this 56-frame thru-bolt pump delivers robust water flow for powerful hydrotherapy jets on high speed while providing efficient circulation and heating on low speed.

Built with Balboa’s multi-directional volute design, the Ultimax offers unmatched installation flexibility — the wet end can be rotated in 90-degree increments to accommodate virtually any plumbing configuration. With 2-inch male buttress thread (MBT) suction and discharge connections and a side-discharge orientation, this pump is a direct replacement for many OEM spa installations. Carbon ceramic seals with Viton elastomers ensure long-lasting performance even under continuous heat and chemical exposure. Whether you are replacing an aging pump or upgrading a multi-jet spa system, the Vico Ultimax 1016012 delivers the power, durability, and quiet operation spa owners expect.

⭐ Key Features

• ✅ 2.0 HP Dual-Speed Motor – High speed powers therapy jets; low speed handles heating and filtration efficiently
• ✅ 56 Frame Thru-Bolt Design – Cool-running motor with compact form factor for reliable, long-life performance
• ✅ 230V / 60Hz Operation – Designed specifically for the North American electrical standard
• ✅ 8.8A High / 2.9A Low – Energy-efficient amperage draw for dual-speed versatility
• ✅ 2-Inch MBT Connections – Male buttress thread suction and discharge ports (outside thread measures approximately 3.1 inches)
• ✅ Side Discharge / Center Suction – Common configuration for easy OEM replacement
• ✅ Multi-Directional Volute – Wet end rotates in 90-degree increments to match any plumbing layout
• ✅ Carbon Ceramic Seals with Viton Elastomers – Endures prolonged heat and chemical exposure for long-lasting, leak-free operation
• ✅ Self-Draining Volute – Drain plug prevents water retention during storage, protecting against freeze damage
• ✅ California Title 20 Compliant – Meets strict energy efficiency regulations
• ✅ UL, TUV, CSA Certified – Safety tested and certified for North American use
• ✅ Can Be Wired for Single Speed – Offers additional configuration flexibility

⚙️ Technical Specifications

Specification	Value
Pump Type	Jet Pump (Hydro-Massage Whirlpool)
Motor Power	2.0 HP (Continuous Duty)
Speed Settings	2-Speed (can be wired for single speed)
Voltage	230V
Frequency	60 Hz
Amperage (High Speed)	8.8 A
Amperage (Low Speed)	2.9 A
Frame Type	56 Frame Thru-Bolt
Suction Port	2 inch MBT (Male Buttress Thread)
Discharge Port	2 inch MBT (Male Buttress Thread)
Suction Style	Center
Discharge Style	Side
Outside Thread Diameter	Approximately 3.1 inches
Seal Type	Carbon ceramic with Viton elastomers
Seal Part Number	PS201 (new style) / PS2136 (old style)
Volute Rotation	Multi-directional (90-degree increments)
Self-Draining Volute	Yes (drain plug included)
Wet End Cover Bolts	5 bolts
Dimensions (Approx.)	15.82 in L × 8.83 in H × 6.5 in diameter
Certifications	UL, TUV, CSA
California Title 20	Compliant
Manufacturer	Balboa Water Group (Vico)
Part Number	1016012
Updated Part Number	5235208-S
Warranty	1 Year (Manufacturer)

⚠️ Note on HP Ratings: This pump is labeled as 2.0 HP. Some retailers may list it between 2.0–2.5 HP depending on the motor brand used. Always match amperage (8.8A high speed at 230V) rather than HP rating when selecting a replacement pump.

⚠️ Note on Dimensions: Approximate dimensions may vary slightly depending on the motor brand (US Motors, AO Smith Century, GE, etc.) installed at the factory. Contact Parts4Tubs to verify dimensions if installation space is limited.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V
Frequency	60 Hz
Phase	Single
Full Load Amps (High Speed)	8.8 A
Full Load Amps (Low Speed)	2.9 A

⚠️ IMPORTANT:

All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Hot tubs require GFCI (Ground Fault Circuit Interrupter) protection. A dedicated circuit is required — do not share with other appliances. Using the wrong voltage will damage the motor and void the warranty.

⚠️ Pump Cord Note: This pump typically ships without a power cord. You will need to reuse your existing pump cord or purchase a compatible replacement amp cord separately. Refer to your spa pack wiring diagram for correct wire connections.

🔗 Compatibility Guide

This Pump:

📍 Frame: 56 Frame Thru-Bolt 📍 Wet End: 2 inch 📍 Discharge: 2 inch MBT, Side Discharge 📍 Suction: 2 inch MBT, Center Suction 📍 Outside Thread Diameter: Approximately 3.1 inches

Replacement Compatibility:

This pump (1016012) has been consolidated under part number 5235208-S by Balboa Water Group. It replaces or is interchangeable with the following verified part numbers:

• 1016058
• 1016043
• 1016204
• 1016181
• 1016228
• 5235208-B
• 1016030
• 1016010
• 1016168 (Cal Spas, PL390)
• 1016209
• 1016206
• 1056062

⚠️ Matching Tips: More important than matching horsepower is matching the amperage rating. If your current Ultimax 56-frame pump draws between 7–9 amps on high speed at 230V, this is the correct replacement. Always verify voltage, amperage, frame size, and port configuration before ordering.

Compatible Spa Brands (OEM installations include):

This pump is found in many OEM hot tubs and spas. Verify your existing pump’s specifications before ordering. Contact Parts4Tubs for compatibility assistance with your specific spa brand and model.

🛠️ Installation Requirements

Mounting:

Requirement	Specification
Mounting Position	Horizontal (standard)
Base	Solid, level, vibration-dampening surface
Ventilation	Adequate clearance around motor for air cooling
Access	Sufficient clearance for maintenance and union access

Plumbing:

Connection	Size
Suction	2 inch MBT (Center)
Discharge	2 inch MBT (Side)
Thread Type	Male Buttress Thread

Wet End Rotation:

The pump ships with the discharge in a default orientation. The wet end can be rotated in 90-degree increments (12, 3, 6, or 9 o’clock positions) by loosening the four long bolts at the back of the motor. Rotate to match your spa’s existing plumbing configuration.

Ozonator Nipples:

All Ultimax pumps include discharge and suction nipples that allow for a side stream flow, such as for an ozonator venturi. If your hot tub uses these nipples, they must first be drilled out on the new replacement pump before they become active.

Installation Notes:

⚠️ Pump must be installed below water level (flooded suction) for proper priming ⚠️ Never run the pump dry — this causes seal damage and motor overheating ⚠️ Ensure proper grounding and bonding per NEC requirements ⚠️ GFCI protection is required by code for all hot tub and spa installations ⚠️ Do not allow the pump to run without priming for more than 2 minutes ⚠️ Warranty does not cover frost damage, dry running, or incorrect wiring/voltage

🔄 Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Around seal plate and union connections
Inspect unions	Monthly	Tighten if needed; check O-rings
Clean strainer/filter	As needed	Remove debris to maintain flow
Check amperage draw	Annually	Should match rated 8.8A high / 2.9A low
Inspect motor vents	Quarterly	Keep clear of debris for proper cooling
Check mounting bolts	Quarterly	Tighten if loose from vibration
Verify drain plug	Before winter storage	Drain pump to prevent freeze damage

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming at startup)
• Water leaking from the seal plate area
• Motor trips the breaker repeatedly
• Reduced water flow from jets
• Motor overheating or shutting down
• Error codes such as low flow or overheat appearing on your spa pack

Seal Replacement:

📍 Seal Type: Carbon ceramic with Viton elastomers 📍 New Style Seal Part Number: PS201 📍 Old Style Seal Part Number: PS2136 ⚠️ Vico has used various seal types over the years. Be sure to identify which style your pump uses before ordering a replacement seal. Replace the seal at the first sign of leakage.

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot tub jet pump	Yes	Ideal for medium to large spas with up to 32 jets
♨️ Spa heating and circulation (low speed)	Yes	Low speed provides efficient water circulation for heating and sanitization
♨️ Multi-pump configurations	Yes	Designed for single or multi-pump systems up to 100+ jets
🛁 Whirlpool bath	Yes	Suitable for whirlpool applications requiring quiet, high-flow performance

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This pump is rated at 2.0 HP continuous duty. The label may show between 2.0 and 2.5 HP depending on the motor brand installed. Always match amperage (8.8A high speed at 230V) rather than HP when replacing a pump.

Q: Will this fit my hot tub? A: This pump uses a 56 frame thru-bolt mounting with 2-inch MBT connections, center suction, and side discharge. Verify your existing pump’s frame size, port sizes, and discharge orientation. If your current Ultimax pump draws 7–9 amps on high speed at 230V, this is likely the correct replacement.

Q: What voltage does this pump require? A: 230V / 60Hz. All electrical installation must be performed by a licensed electrician. Using the wrong voltage will damage the motor.

Q: Does this pump run on 115V or 230V? A: This specific model (1016012 / 5235208-S) is a 230V pump. Do not connect to a 115V circuit. Check your existing pump’s voltage before ordering.

Q: Is this a single or dual speed pump? A: This is a 2-speed pump. High speed powers the therapy jets; low speed handles circulation and heating. It can also be wired for single-speed (high speed only) operation if needed.

Q: What size are the ports? A: Both suction and discharge ports are 2-inch male buttress thread (MBT). The outside thread diameter measures approximately 3.1 inches.

Q: Does this pump come with a cord? A: No, most Ultimax pumps ship without a power cord. Reuse your existing pump cord or purchase a compatible amp cord separately. Refer to your spa pack wiring diagram for proper connections.

Q: Can I rotate the wet end to match my plumbing? A: Yes. The multi-directional volute can be rotated in 90-degree increments by loosening the four long bolts at the back of the motor.

Q: What is the difference between part numbers 1016012 and 5235208-S? A: Balboa Water Group has consolidated several Ultimax part numbers under the new number 5235208-S. The specifications and functionality remain the same. Part number 1016012 is now fulfilled as 5235208-S.

Q: What warranty is included? A: 1 year manufacturer warranty covering both the pump and motor. Warranty does not cover frost damage, dry running, or damage caused by incorrect wiring or voltage. Contact Parts4Tubs for full warranty terms.

Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding, screeching, or humming), leaking seals, reduced jet flow, the motor tripping the circuit breaker, or overheat/low flow error codes on your spa control panel.

Q: Do I need a GFCI breaker? A: Yes, GFCI protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.

🏆 Why Choose the Balboa Vico Ultimax 2.0 HP

• ✅ Powerful 2.0 HP dual-speed motor delivers strong jet performance and efficient low-speed circulation
• ✅ 56 frame cool-running design ensures reliable, long-life operation
• ✅ Carbon ceramic seals with Viton elastomers withstand prolonged heat and chemical exposure
• ✅ Multi-directional volute rotates in 90-degree increments for universal plumbing compatibility
• ✅ Energy-efficient and whisper-quiet operation meets strict noise and efficiency standards
• ✅ UL, TUV, and CSA certified for safety and quality assurance
• ✅ Direct replacement for numerous OEM Ultimax, Niagara, and UltraJet pump models
• ✅ California Title 20 compliant for energy efficiency regulations
• ✅ 1 year manufacturer warranty backed by Balboa Water Group

🤝 Why Buy from Parts4Tubs

• ✅ US-based support for American customers
• ✅ Fast shipping across the United States
• ✅ Expert advice from spa and hot tub specialists
• ✅ Competitive pricing in USD
• ✅ Full warranty support
• ✅ Hassle-free returns
• ✅ Replacement seals and parts available
• ✅ Dedicated customer service team

✨ Summary

The Balboa Vico Ultimax 1016012 (5235208-S) is a 2.0 HP, 2-speed, 230V jet pump built on Balboa’s proven 56-frame platform. With 8.8/2.9A amperage, 2-inch MBT connections, side discharge, center suction, and a multi-directional rotatable volute, this pump is a direct replacement for a wide range of OEM spa installations. Carbon ceramic seals, UL/TUV/CSA certification, and California Title 20 compliance make it a reliable, energy-efficient choice. Order today from Parts4Tubs for fast US shipping and expert support.

Parts4Tubs is proud to be a Balboa Authorized Online Seller - make sure you only buy genuine Balboa parts from trusted sources.

**PLEASE READ THIS IS IMPORTANT**

When selecting a Balboa Ultimax or Vico Ultimax pump, you must pay careful attention to the wet end. The is the black part on the end of the pump which connects to the plumbing and has the impellor inside.

Balboa have made this pump under various OEM agreements, for the likes of CalSpa amongst others who have then included it in their hot tubs.

Whereas normally with a pump, you can select the voltage, horsepower and frame size, it is a little more difficult with this brand. There are different types of wet end for this model and the discharge (the part that connects to the pipework that flows to your jets) can be in a different position. Normally, you would choose from either side discharge, or center discharge but "helpfully" (not at all!) Balboa has a different offset for the side discharge on this model. THIS IS NOT STANDARD.

If you get this wrong, the part will not fit.

Please take a look at the two different examples below. Both of these are for a 2HP pump but you can see they look totally different. You will also notice that the position of the discharge is roughly 1" different. The one on the left is offset around 2.5" and the one on the right is offset around 1.5".

If you are looking to replace a pump and you need a non-standard wet end, you will need to buy a new pump AND the wet end that you need. Please note, in some cases you will just need to change the Volute (impeller cover)

The standard model comes already fitted to the pump whereas the non-standard model will need to be purchased separately, and you will need to change this over. 

If you are comfortable enough to switch out a pump, changing a wet end over should not be a problem for you.

If you are not sure, please do get in touch.

 

 

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	Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBT Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring	$6.36 Max: 289 Min: 1 Step: 1 Add to cart
	Magic Plastics Union 0602-20 (2″ Pump Union) | 2″S x 2″FBT w/ O-Ring Union, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring	$8.00 Max: 842 Min: 1 Step: 1 Add to cart
	Waterway Union 400-6010 | 2-1/2″ Union Nut with 2-1/2″ Slip tailpiece and o-ring (2.5″ union) Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S	$14.77 Max: 119 Min: 1 Step: 1 Add to cart
	1 Speed Pump / Blower / AMP Cord | 21086 Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White	$24.71 Max: 395 Min: 1 Step: 1 Add to cart
	Balboa Amp Plug 21087 (For 2 Speed Pumps) Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White	$31.72 Max: 126 Min: 1 Step: 1 Add to cart

Hot Tub Pump Collar & Union Size Chart

Imperial & Metric Specifications

Union Size	Collar Size	Thread OD	Union OD	O-Ring Size
1.5" Female Buttress Thread (FBT)	2.5" / 64mm (Tip to Tip) Measurement	2-1/2" 64mm	2-13/16" 71mm	2-5/16" OD 59mm
2" Female Buttress Thread (FBT)	3.1" / 78mm (Tip to Tip) Measurement	3-1/16" 78mm	3-3/8" 81mm	2-15/16" OD 75mm
2.5" Female Buttress Thread (FBT)	3.6" / 91mm (Tip to Tip) Measurement	3-5/8" 91mm	4-1/4" 108mm	3-7/16" OD 87mm

Important Notes

The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement.

Collar size is measured from thread tip to thread tip on the pump outlet.

Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications.

O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy.

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.

2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)

3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.

4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.

5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.

6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.

7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.

8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.

9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.

10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.

11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.

12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.

13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.

14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.

15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.

2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.

3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.

4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.

5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.