🔥 Balboa Vico Ultimax Spa Pump — 4.0 HP 2-Speed 230V 56-Frame Side Discharge (5235212-S)

High-flow performance pump engineered for multi-jet spa systems demanding powerful hydrotherapy

♨️ Product Overview

The Balboa Vico Ultimax 5235212-S is a 4.0 HP (3.0 HP operational) dual-speed, 230V/60Hz jet pump engineered by Balboa Water Group (formerly branded as Vico Ultimax and Vico Niagara) for portable spas, hot tubs, and hydrotherapy systems. Drawing 12.0 amps on high speed and 3.5 amps on low speed, this compact 56-frame pump features side discharge with 2″ intake and 2″ discharge MBT connections (approximately 3-1/16″ outside thread diameter). Designed for applications ranging from small zone-seating spas to multi-pump configurations powering 100+ jetted systems, the Ultimax delivers flow rates exceeding 230 GPM with wet end hydraulics capable of 325+ GPM — making it one of the highest-flow spa pumps in its class. The multi-directional volute can be rotated in 90-degree increments to accommodate virtually any plumbing configuration. All seals are carbon ceramic with Viton elastomers for exceptional longevity under prolonged heat and chemical exposure. Features include built-in motor overheat protection, a drain plug for winterization and hygiene, and suction/discharge nipples that allow side-stream flow connections for ozonator venturi injection. This pump ships without a cord or tailpieces — reuse your existing pump cord or purchase separately. Manufactured by Balboa Water Group — the world’s largest manufacturer of electronic control systems and components for the spa and hot tub industry. The Vico Ultimax is one of the most widely cross-referenced OEM spa pumps in North America, replacing dozens of older Balboa, Vico, Pentair, and Ultrajet pump designations across countless spa brands including Artesian Spas, Vita Spa, and many others.

⭐ Key Features

✅ 4.0 HP Dual Speed — 230V/60Hz — High speed (12.0A) for powerful multi-jet hydrotherapy and low speed (3.5A) for quiet filtration and circulation

✅ Flow Rates Exceeding 230 GPM — Ultimax wet end hydraulics deliver industry-leading flow for maximum jet power in multi-jet spa systems

✅ 56-Frame Motor — Compact design for reliable high-output performance in spa equipment bays

✅ 2″ Side Discharge — 2″ intake and 2″ discharge MBT connections (approximately 3-1/16″ outside thread diameter) for high-volume water flow

✅ Multi-Direction Volute Mounting — Wet end rotates in 90-degree increments to accommodate any spa plumbing configuration

✅ Carbon Ceramic Seal with Viton Elastomers — Superior seal technology for long-lasting performance under prolonged heat and chemical exposure

✅ Motor Overheat Protection — Auto shut-off prevents motor damage from overheating

✅ Drain Plug Included — Allows complete draining for winterization and hygienic storage

✅ Ozonator Venturi Ports — Suction and discharge nipples for side-stream flow connections (ozone injection)

✅ Energy Efficient & Whisper Quiet — Optimized motor and hydraulic design for reduced noise and lower operating costs

✅ Versatile Wiring — 2-speed pump can also be wired for single-speed (high speed only) operation

✅ Massive OEM Cross-Reference — Replaces 50+ older Balboa, Vico, Ultrajet, Pentair, and Niagara pump part numbers

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🔩 Technical Specifications

Specification	Value
Manufacturer	Balboa Water Group
Brand	Vico Ultimax (formerly Vico Niagara / Ultrajet Ultimax)
Part Number	5235212-S
Same As	1016170
Pump Type	Jet Pump — Side Discharge
Horsepower	4.0 HP
Horsepower (Operational)	3.0 HP
Speed Settings	2-Speed (Dual Speed) — can be wired single-speed
Voltage	230V (220-240V)
Frequency	60 Hz
High Speed Amperage	12.0 Amps
Low Speed Amperage	3.5 Amps
Maximum Head	42 ft
Flow Rate	Exceeding 230 GPM (pump assembly)
Wet End Flow Capacity	Exceeding 325 GPM
Frame Type	56 Frame
Discharge Type	Side Discharge
Discharge Size	2″ MBT (Male Buttress Thread)
Suction Size	2″ MBT (Male Buttress Thread)
Suction Style	Center
Outside Thread Diameter	Approximately 3-1/16″ (3.1″)
Volute Mounting	Multi-directional — rotatable in 90-degree increments
Seal Type	Carbon ceramic with Viton elastomers
Thermal Protection	Built-in auto motor overheat shut-off
Drain Plug	Yes — for winterization and hygienic storage
Ozonator Ports	Suction and discharge nipples for side-stream flow
Cord	NOT INCLUDED — reuse existing or purchase separately
Tailpieces / Unions	NOT INCLUDED (per Parts4Tubs)
Dimensions (Approximate)	15.82″ L × 8.83″ H × 6.5″ diameter (wet end)
Certifications	Balboa Water Group quality standards
Warranty	1 Year Manufacturer Warranty

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V (220-240V)
Frequency	60 Hz
Phase	Single Phase
High Speed Amperage	12.0 A
Low Speed Amperage	3.5 A
Thermal Protection	Built-in auto overheat shut-off
Cord	NOT INCLUDED — reuse existing or purchase new

⚠️ IMPORTANT ELECTRICAL SAFETY:

All electrical installations must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. This 230V pump must be connected to a supply circuit protected by a Ground-Fault Circuit Interrupter (GFCI). A dedicated circuit is required — do not share with other appliances. This pump is normally directly wired to the receptacle of the spa pack controller — save your old pump’s cord so you have the correct connector.

💡 Wiring Note: This 2-speed pump can also replace any single 1-speed pump of equivalent amperage. Wire only the high-speed terminal for single-speed operation.

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🔗 Compatibility Guide

Port & Frame Configuration

Specification	Detail
Frame	56 Frame
Suction	2″ MBT (Center)
Discharge	2″ MBT (Side)
Outside Thread Diameter	Approximately 3-1/16″ (3.1″)
Volute	Multi-directional — rotatable in 90° increments
Drain Plug	Yes
Ozonator Ports	Side-stream nipples on suction and discharge

Plumbing Connection Guide

Outside Thread Measurement	Actual Port Size
Approximately 2-3/8″	1-1/2″ inlet or outlet
Approximately 3-1/16″ (3.1″)	2″ inlet or outlet — THIS PUMP
Approximately 3-5/8″	2-1/2″ inlet or outlet

💡 2″ plumbing connections are for 2″ inner diameter hose or pipe. The threads measure approximately 3-1/16″ (3.1″) on the outside.

OEM Spa Brand Applications (Verified Cross-References)

Brand	Part Number	Source
Artesian Spas	21-0110-81	Pool-Spa-Supplies confirmed
Vita Spa	Confirmed replacement from customer reviews	eBay confirmed

Compatibility Verification Checklist

Always verify compatibility by matching these specifications from your existing pump:

1. Amperage — must match 12.0A high / 3.5A low (do NOT exceed your old pump’s amps)
2. Voltage — must be 230V / 60Hz
3. Frame — 56 frame
4. Port sizes — both suction and discharge must be 2″ MBT (~3-1/16″ outside thread)
5. Discharge direction — Side discharge (volute is rotatable)
6. Speed — 2-speed (or use as single-speed replacement)

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📐 Alternate Part Numbers

Primary Designations

Part Number	Notes	Source
5235212-S	Current primary Balboa SKU	Parts4Tubs, Amazon, Pool-Spa-Supplies, SpaGuts, BathParts, SuperiorPoolAndSpa confirmed
5235212-B	Older version — same pump	Pool-Spa-Supplies, EasySpaParts, SpaGuts confirmed
5235212	Base number without suffix	HotTubOutpost, EasySpaParts confirmed
5235210-S	EasySpaParts primary SKU	EasySpaParts (listed as same pump)
5235210	Base number without suffix	EasySpaParts confirmed
1016170	Balboa manufacturing P/N — same pump	Pool-Spa-Supplies (“Same As”), EasySpaParts, SpaPartsExperts, HotTubOutpost, BathParts confirmed
10-5235212	Expanded form	Pool-Spa-Supplies confirmed
BB5235212S	Concatenated form	EasySpaParts confirmed

OEM / Spa Brand Cross-References

Part Number	Brand / Type	Source
21-0110-81	Artesian Spas	Pool-Spa-Supplies confirmed
34-138-1018	Hydropool item number	Pool-Spa-Supplies confirmed
P625216	OEM cross-reference	SuperiorPoolAndSpa confirmed
388613	Older Balboa/Vico designation	Pool-Spa-Supplies, SuperiorPoolAndSpa confirmed
1056016	Balboa manufacturing	Pool-Spa-Supplies, EasySpaParts, HotTubOutpost confirmed
1056024	Balboa manufacturing	SpaGuts confirmed
1016205	Balboa Niagara designation	Pool-Spa-Supplies, EasySpaParts confirmed
1016174	Balboa variant	Pool-Spa-Supplies, EasySpaParts, SpaGuts confirmed
1016323	Balboa variant	Pool-Spa-Supplies confirmed

Replaces These Balboa/Vico Manufacturing Part Numbers (2-Speed)

The 5235212-S is the current production replacement for dozens of older pump designations. Key 2-speed replacements include:

10xxxxx-series (Balboa manufacturing numbers): 1016014, 1016025, 1016063, 1016070, 1016160, 1016166, 1016167, 1016170, 1016172, 1016173, 1016174, 1016184, 1016194, 1016195, 1016200, 1016205, 1016215, 1016218, 1016230, 1016235, 1016236, 1016280, 1056016, 1056024

PUUMS/PUUMC-series (Vico model codes): PUUM2302582F, PUUM2302582FR, PUUMC2302582F, PUUMC2302582FJ, PUUMC2302582FR, PUUMS2602582F, PUUMSC2502582FR, PUUMSC2602582F, PUUMSC2602582FDS, PUUMSC402582FR, PUUM402582F, PUM22000927

PL-series & Other: PL342, PL388, PL389, X320527, X320528, X320558

Also Replaces These 1-Speed Pump Numbers (Wire High Speed Only)

1016019, 1016024-NHP, 1016026-NHP, 1016178, 1016278, 1015112, 1016020-NHP, 1016205-NHP, X320375

⚠️ Cross-Reference Note: The Balboa Vico Ultimax has one of the largest cross-reference databases in the spa pump industry. Every spa manufacturer received their own unique model number for this same pump. The lists above are compiled from EasySpaParts, SpaGuts, SpaPartsExperts, and SuperiorPoolAndSpa. Always verify amperage (12.0A/3.5A at 230V) matches your existing pump before ordering.

Vico Ultimax Family (56-Frame, 2-Speed, 230V, Side Discharge)

Part Number	HP	HP (Operational)	Amps (High/Low)	Notes
5235208-S / 5235208-B	2.0 HP	2.5 HP	8.8-10/3.0-3.5 A	Smaller Ultimax
5235212-S / 5235212-B	4.0 HP	3.0 HP (Operational)	12.0/3.5 A	THIS PRODUCT
5235216-S	5.0 HP	—	Higher amps	Largest Ultimax (special order)

Single-Speed Counterpart

Part Number	HP	Speed	Volts	Amps	Notes
7154213-S	3.0 HP	1-Speed	230V	6.0 A	Ultimax single-speed version

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🛠️ Installation Requirements

Mounting

Requirement	Specification
Mounting Position	Horizontal — below water level (flooded suction)
Base	Solid, level surface
Ventilation	Adequate clearance around motor for cooling airflow
Access	Clearance for maintenance, seal inspection, and wet end rotation

Plumbing

Connection	Size	Notes
Suction	2″ MBT (Center)	~3-1/16″ outside thread
Discharge	2″ MBT (Side)	~3-1/16″ outside thread — rotatable
Ozonator Ports	Side-stream nipples	On suction and discharge

Installation Notes

⚠️ Never run pump dry — always ensure the pump is primed and filled with water before starting.

⚠️ The wet end can be rotated in 90-degree increments to align the side discharge with your existing plumbing. The pump ships in the 12 o’clock discharge position.

⚠️ This pump does NOT include a cord or tailpieces. Reuse your existing pump cord with the correct connector for your spa pack. Save your old pump’s cord before removing.

⚠️ Motor base width may vary between Century and US Motors brands. Verify motor base compatibility with your spa’s mounting bracket.

⚠️ Ensure proper grounding and bonding per NEC requirements. GFCI protection is required for all spa installations.

💡 Discharge Orientation: If the side discharge port doesn’t align with your plumbing, loosen the volute bolts, rotate the wet end to the desired position (90° increments), and retighten.

💡 Winterization: Use the drain plug to completely drain the pump body during storage to prevent freeze damage and ensure hygienic conditions.

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🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal area, unions, and volute bolts
Inspect unions/connections	Monthly	Ensure tight fit — no water weeping
Verify both speeds function	Monthly	Low speed for filtration, high speed for jets
Check amperage draw	Annually	High: ~12.0A, Low: ~3.5A at 230V
Inspect motor vents	Quarterly	Keep free of debris and obstructions
Verify GFCI operation	Monthly	Press test button to confirm proper function
Check drain plug	Before winterization	Ensure it can be removed for draining
Inspect ozonator port connections	Quarterly	If used — check for leaks or deterioration

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without rotation)
• Water leaking from the seal area
• Motor repeatedly trips the circuit breaker or GFCI
• Noticeably reduced water flow or weak jets
• Motor overheating or burning smell
• Motor hums but won’t start (possible capacitor failure)
• Excessive vibration

Seal Information

Detail	Specification
Seal Type	Carbon ceramic with Viton elastomers
Performance	Long-lasting under prolonged heat and chemical exposure

⚠️ Replace seal at first sign of water leakage from the seal area. Carbon ceramic with Viton elastomer seals are specifically engineered to withstand the harsh chemical and thermal environment inside a spa.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Multi-jet spa systems	✅ Yes	Specifically designed for multi-pump configurations powering 100+ jet systems
♨️ Zone seating / focused therapy	✅ Yes	Ideal for dedicated zone jet pumps
♨️ High-flow luxury spa systems	✅ Yes	Flow rates exceeding 230 GPM for maximum jet power
♨️ Single-pump spa systems	✅ Yes	Low speed for filtration, high speed for jets
♨️ Replacement for Vico Ultimax/Niagara	✅ Yes	Direct replacement for 50+ older pump designations
♨️ Replacement for Power Right 6BHP pumps	✅ Yes	HotTubOutpost confirmed — 6 BHP = equivalent to 4.0 HP (3.0 HP operational)
🛁 Whirlpool bath	⚠️ Verify	230V — most whirlpool baths use 115V; verify voltage

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❓ Frequently Asked Questions

Q: What is the actual horsepower of this pump? A: This pump is rated at 4.0 HP (with 3.0 HP operational/continuous duty). Some older labels show 6.0 BHP (Brake Torque HP). These are all the same pump — different HP rating methods used in the spa industry. Always match by amperage (12.0A high / 3.5A low at 230V) rather than HP alone.

Q: What does “5235212-S” vs “5235212-B” mean? A: They are the same pump. The suffix indicates different production batches or packaging configurations from Balboa Water Group. Both are functionally identical.

Q: What is the difference between 5235212-S and 1016170? A: They are the same pump. 5235212-S is the primary Balboa catalog SKU, while 1016170 is Balboa’s internal manufacturing part number. Every spa manufacturer also received their own unique number for this same pump.

Q: Is a cord included? A: No. This pump ships without a cord or tailpieces. Reuse your existing pump cord or purchase a new one with the correct connector for your spa pack. Save your old pump’s cord before removing the old pump.

Q: Are unions/tailpieces included? A: Parts4Tubs listing specifies “No cord or Tailpieces.” Some other retailers may include unions. Verify with Parts4Tubs at time of purchase.

Q: What size are the ports? A: Both suction (center) and discharge (side) are 2″ MBT (Male Buttress Thread). The outside thread diameter measures approximately 3-1/16″ (3.1″) and connects to 2″ inner diameter spa plumbing.

Q: Can I rotate the discharge direction? A: Yes. The multi-directional volute can be rotated in 90-degree increments to align the side discharge with your existing plumbing. Loosen the volute bolts, rotate to the desired position, and retighten.

Q: Can this replace a single-speed pump? A: Yes. This 2-speed pump can replace any single 1-speed pump with equivalent amperage by wiring only the high-speed terminal.

Q: Does this replace the old “6 BHP” Power Right pump? A: Yes. The old 6 BHP (Brake Torque HP) rating is equivalent to the current 4.0 HP rating (3.0 HP operational). This is confirmed by HotTubOutpost as a direct replacement.

Q: What motor brands might be installed? A: Balboa ships these with either Century or US Motors brand motors. Both are functionally equivalent, but motor base widths may differ — Century motors may have a wider 6″ base vs the standard 4″ base. Verify base compatibility if your spa has a narrow mounting bracket.

Q: What warranty is included? A: 1-year manufacturer warranty from Balboa Water Group. Contact Parts4Tubs for full warranty terms.

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 5235212-S

✅ Exceptional Flow Performance — Exceeding 230 GPM at the pump assembly with wet end capacity of 325+ GPM for maximum jet power

✅ Industry’s Largest OEM Cross-Reference — Replaces 50+ older pump designations from Balboa, Vico, Ultrajet, Pentair, and Niagara

✅ Multi-Direction Volute — Rotatable in 90° increments for flexible plumbing alignment in any spa configuration

✅ Carbon Ceramic / Viton Seal Technology — Superior chemical and heat resistance for extended seal life

✅ Motor Overheat Protection — Built-in auto shut-off prevents costly motor damage

✅ Dual-Speed Versatility — High speed for jets and low speed for quiet filtration, or wire as single-speed

✅ Drain Plug & Ozonator Ports — Winterization-ready with built-in ozone venturi capability

✅ 42 ft Maximum Head — Adequate head pressure for complex multi-jet plumbing configurations

✅ Balboa Water Group Quality — World’s largest manufacturer of spa electronic control systems and components

🤝 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

✅ Full warranty support

✅ Hassle-free returns

✅ Compatible pump cords, unions, seals, and replacement parts available

✅ Dedicated customer service team

✨ Summary

The Balboa Vico Ultimax 5235212-S is a 4.0 HP (3.0 HP operational) dual-speed, 230V/60Hz jet pump drawing 12.0/3.5 amps with a 56-frame motor. Delivering flow rates exceeding 230 GPM through Balboa’s high-performance Ultimax wet end (325+ GPM capable), this side-discharge pump features 2″ MBT connections (~3-1/16″ outside thread) on both suction (center) and discharge (side). The multi-directional volute rotates in 90° increments for flexible plumbing alignment. Built with carbon ceramic seals with Viton elastomers, auto motor overheat protection, drain plug, and ozonator venturi ports. Maximum head: 42 ft. Cord and tailpieces not included. Replaces 50+ older Balboa, Vico, Ultrajet, Pentair, and Niagara pump designations including 5235212-B, 1016170, 1056016, 388613, and dozens more. Approximate dimensions: 15.82″ L × 8.83″ H × 6.5″ wet end diameter (may vary by motor brand). 1-year Balboa manufacturer warranty. Available now at Parts4Tubs with fast US shipping and expert compatibility support.