Balboa Ultimax 5235212-S Spa Pump – 230V, 2-Speed, 56-Frame, 12/3.5A

The Balboa Ultimax 5235212-S spa pump is a complete replacement pump and motor assembly featuring 230V operation, a 56-frame motor, and two-speed performance rated at 12 amps on high speed and 3.5 amps on low speed. Designed for compatible hot tub jet and filtration systems, this Balboa/Vico Ultimax pump features center suction, side discharge, and nominal 2-inch plumbing connections. It can be wired for one-speed or two-speed operation to suit the connected spa control and application. Power cord and pump unions are not included. Specifications Specification Details Manufacturer Balboa Water Group Pump Family Ultimax / Vico Ultimax Manufacturer Part Number 5235212-S Voltage 230V Frequency 60Hz Motor Frame 56-frame, thru-bolt Motor Type Two-speed High-Speed Amperage 12.0A Low-Speed Amperage 3.5A Operating Options Can be wired for one or two speeds Suction Connection Nominal 2-inch male buttress thread Discharge Connection Nominal 2-inch male buttress thread Suction Position Center Discharge Style Side Assembly Complete motor and wet end Power Cord Not included Pump Unions Not included Replacing an Older Balboa or Vico Ultimax Pump? Spa-parts suppliers document the following cross-references for the 5235212-S: Older or Alternate Part Number Identification 5235212-B Alternate Balboa pump designation 1016170 Balboa/Vico Ultimax cross-reference 1016205 Balboa/Vico Niagara cross-reference 1016218 Older pump cross-reference 1016235 Older pump cross-reference Use these numbers as a starting point when identifying your replacement. Confirm your existing pump’s voltage, speeds, amperage, plumbing connections, discharge position, and mounting dimensions before ordering. Need help matching your pump? Send Whirly Bros photos of the pump label, motor label, and plumbing connections. Include all visible model and part numbers. One-Speed or Two-Speed Operation The 5235212-S has a two-speed motor that can be connected for: Two-speed operation: low speed for circulation and filtration, and high speed for therapy jets in a compatible spa system. One-speed operation: one selected motor speed controlled by a compatible spa control. The installer must follow the wiring diagram on the supplied motor and verify the control system’s electrical ratings. Never energize both speed terminals simultaneously. Why Horsepower Labels May Differ Older spa pumps may carry horsepower descriptions that differ from current replacement listings. The 5235212-S is commonly advertised under both 3 HP and 4 HP descriptions. For replacement selection, compare the part number, 230V supply, 12.0/3.5A ratings, motor speeds, frame size, plumbing dimensions, and required pump performance. Horsepower alone does not confirm that a pump will fit or perform correctly. Check Before Ordering Electrical compatibility: Verify the voltage, speed requirements, and current capacity of your spa control. Plumbing size: Both connections are nominal 2-inch. Nominal plumbing size refers to the connection standard, not the outside diameter measured across the threads. Discharge position: Compare the outlet orientation with your existing pump and available plumbing space. Mounting and clearance: Check the motor base, mounting-hole spacing, connection heights, and overall installation space. Production versions may use different motor bases. Cord and unions: Reuse existing components only when they are compatible and in suitable condition, or purchase replacements separately. Frequently Asked Questions Does the 5235212-S include a motor? Yes. This is a complete pump assembly with the motor and wet end. Are the power cord and pump unions included? No. The power cord and pump unions are sold separately. Can this pump run on 115V or 120V? No. This model requires a 230V supply. Can I use it as a single-speed pump? Yes, when wired for one selected speed according to the motor wiring diagram and connected to a compatible spa control. Does it replace 5235212-B or 1016205? Both are documented supplier cross-references for this pump. Verify the electrical specifications, plumbing, and mounting dimensions for your installation before purchasing. Can I replace the smaller 5235208-S with this pump? Do not assume they are interchangeable because they belong to the Ultimax family. The 5235212-S has higher listed current requirements. Your spa control, electrical supply, plumbing, and jet system must support the replacement pump’s requirements and performance. Will it use my existing mounting holes? Mounting arrangements can vary between motor versions. Compare dimensions before installation; base or mounting adjustments may be necessary. Get Help Finding the Right Replacement Contact Whirly Bros with your existing pump information before ordering if you are unsure about fitment. Clear label photos and pictures of the plumbing connections help us review the correct replacement. Installation and wiring should be completed by a qualified spa technician or electrician following the instructions supplied with the pump.