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B977 2-Speed Pump Motor 56J Frame 1.5 HP C-Face 230V

The AO Smith B977 2-Speed Pool Pump Motor is a C-Face Mount style motor with a 56J Frame and is has a high speed of 1.5 Horsepower and a low speed of 1/4 Horsepower. C-Frame motors have a round "face" where the motor mounts to the pump with 4 bolt holes to attach the pump and a threaded shaft.

It is important to know that pool pump motors are not manufactured by the pump manufacturer; the motor will usually be manufactured by AO Smith, Magnetek or Centurion. Your pump's motor should have a label or faceplate on it which includes the information you need to replace your pump motor. The most important categories to note will be the horsepower (hp), motor frame (fr), voltage and service factor (sf). Some labels will provide you with a model number and it will usually be listed as CR or CAT.

Cross Reference: 1615Z-2-MC, 1615Z-2-MSC, SP-1615-Z2-MC, SP-1615-Z2-MSC, A0564700, STS1152R, 152686, 158226, 158567, 159818, 159944, 165978, 177062, 177103, 177107, 177108, 177242, 190040, 190047, 190066, 190095, 190114, 190125, 190146, 190147, 190161, 190190, 193636, 8-177062-03, B927, B957, C1112, EB977, 1105200403, 15940, CT115T, 7-193636-05, 10-177062-03, 7-177062-05, 8-190114-01, 8-177062-05, 8-177107-04, 8-177103-02, 5KCR48SN3015X, MGT605117, 817706205, 35B1199, SPX1610Z2MNS, SP1610Z2MNS

When replacing your pool pump motor you should always replace the shaft seal as well. The shaft seal is a 2 part piece made of rubber, metal and ceramic and keeps water from entering the pump motor. It is located near the impeller at the end of the motor shaft. Shaft seals vary between pumps so be sure to order the appropriate shaft seal for your pump.

More Information
Delivery Time 2-5 Business Days
Manufacturer AO Smith
Technical Specs

Voltage: 230V
Amps: 3.1 / 8.9
Service Factor: 1.20
RPM: 1725 / 3450
Frame: 56J
Hertz: 60 hz
5/8" diameter threaded shaft
Ball bearing and 50C ambient

Works with the following pumps:
Hayward Super Pump
Hayward Super II
Hayward Max-Flo
Hayward NorthStar
Jandy Stealth
Jandy Plus HP
Jandy HHP
Jacuzzi Magnum

SKU MGT-60-5117
Manufacturer Part # B2977
Product Features
  • Model number B2977
  • Replaces model number B977
  • 2 Speed Motor
  • High Speed: 1-1/2 HP
  • Low Speed: 1/4 HP
  • Full Rated
  • Service Factor: 1.30
  • 56J Frame
  • 56C Face Mount
  • Threaded Shaft
  • 230 Volt
  • 3.1 / 8.9 amps
  • Capacitor Start
  • Automatic Overload Protection
  • Non-Reversible CCW
  • Stainless Steel Shaft
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