Century A.O. Smith 1 HP Up-Rated Pool and Spa Pump Replacement Motor

AO Smith 1HP Square Flange Centurion

The AO Smith B853 Pool Pump Motor is a square flange style motor with a 56Y Frame and is an Up Rated 1 Horsepower Motor. Square Flange motors have a square "face" where the motor mounts to the pump with 4 non-threaded bolt holes to attach the pump and a threaded shaft.

Square Flange motors are most commonly used on Pentair Challenger, WhisperFlo, SuperFlo, and Pinnacle pumps, Hayward TriStar and Max-Flo II pumps, most Jandy pumps, and Sta-Rite Max-E-Pro, Max-E-Glas/Max-E-Glas II, Dura-Glas/Dura-Glas II, Dyna-Pro, Dyna-Glas, and Dyna Max pumps