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AO Smith B625 pool booster pump motor with GO-KIT-71 replacement kit

AO Smith

AO Smith B625 3/4 HP Pool Booster Pump with GO-KIT-71 Motor Polaris PB4-60

SKU CH-1S91-AMK8D

A 3/4 HP booster pump motor with 56CZ frame, 3-5/8" threaded shaft and 3600 RPM for Polaris PB4-60 systems

  • Product typePool Pump Motors
  • 3/4 HP motor delivers strong booster pressure for cleaner operation
  • Dual-voltage 115/230 V design suits most residential wiring
  • 3600 RPM speed provides high flow for Polaris PB4-60 compatibility
  • 56CZ frame with 3-5/8" threaded shaft ensures direct replacement fit
  • GO-KIT-71 motor package simplifies installation with matched components

Direct replacement motor

The AO Smith B625 is a 3/4 horsepower pool pump motor designed as a direct replacement for Polaris PB4-60 booster pumps. It operates at 3600 RPM on a 56CZ frame with a 3-5/8 inch threaded shaft. The motor runs on dual-voltage 115/230 volt supply drawing 6.4 or 12.8 amps respectively.

Thermals noise and power

The motor draws 6.4 amps at 115 volts or 12.8 amps at 230 volts during normal operation. It spins at a constant 3600 RPM to maintain booster pressure for pool cleaning systems. Standard single-speed operation means consistent power draw and audible output while the pump is running.

Upgrade path and fitment

This unit replaces a failed or ageing Polaris PB4-60 booster motor and includes the GO-KIT-71 installation kit. It will not fit Hayward booster pumps, so buyers with Hayward equipment must seek an alternative. The jump is worth it when the original motor fails or loses prime on a compatible Polaris system.

How it compares

Measured against everything we stock in Pool Cleaners & Maintenance Supplies, at today’s prices. Recalculated every night.

Price $269.99
Pricier than about 72% of the 207 comparable items (median $100.99).

Specifications

Product
Product typePool Pump Motors

Questions about this item

How do I wire the B625 motor for 115 V or 230 V supply?

The motor runs on 115/230 V; follow the wiring diagram on the nameplate to match your supply voltage and the 6.4/12.8 A rating.

When should I replace the GO-KIT-71 components?

Replace the GO-KIT-71 seals and bearings when you notice leakage, noise or vibration during the 3600 RPM operation.

What thermal limit protects the 3/4 HP motor during long runs?

The motor’s internal overload trips at the 56CZ frame’s design temperature to protect the 3/4 HP windings.

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