One name, three labels
A.O. Smith Corporation sold its motor business (Electrical Products Company) to Regal Beloit in 2011; Regal Beloit merged with Rexnord in 2021 to form Regal Rexnord. Century is Regal Rexnord's aftermarket motor brand, and the identical stock numbers are sold as “A.O. Smith,” “A.O. Smith Century,” or “Century.” If your nameplate says A.O. Smith and the box says Century — or vice versa — it's the same motor, and our pages cross-link the identical numbers.
What we quote
We quote A.O. Smith pool and spa pump motors — the 56J threaded C-face motors for Hayward-style pumps, the 56Y square-flange motors for Pentair and Sta-Rite pumps, the Flex-48 thru-bolt motors, and condenser fan motors. Pool pros match total HP (THP = label HP × service factor), not label HP alone — and an up-rated motor must never replace a full-rated one of the same label HP. Every A.O. Smith model page carries the up-rated/full-rated explainer and the frame fitment notes for your pump.
How to get your quote
Send the A.O. Smith model or catalog number, the pump make and model, and the nameplate photo. We confirm THP, frame (56J / 56Y / 48Y), and shaft seal size before quoting — the seal gets replaced with every pool motor swap.
Need an A.O. Smith motor?
Tell us the model or send a nameplate photo. Firm quote with availability and lead time, usually within one business day.
Get a QuoteA.O. Smith model-specific pages
Individual pages with verified specs — find yours, check the nameplate, and request a quote.
- A.O. Smith UST10723/4 HP up-rated 56J pool motor, 0.75 THP
- A.O. Smith UST11021 HP up-rated 56J pool motor, 1.1 THP
- A.O. Smith UST12022 HP up-rated 56J pool motor, 2.2 THP
- A.O. Smith UST12522.5 HP up-rated 56J pool motor, 2.65 THP
- A.O. Smith ST11021 HP full-rated 56J pool motor, 1.5 THP
- A.O. Smith ST12022 HP full-rated 56J pool motor, 2.64 THP
- A.O. Smith B2852V13/4 HP up-rated 56Y pool motor, 0.94 THP
- A.O. Smith B2853V11 HP up-rated 56Y pool motor, 1.25 THP
- A.O. Smith B2859V12 HP up-rated 56Y pool motor, 2.2 THP
- A.O. Smith B28402.5 HP up-rated 56Y pool motor, 2.6 THP
- A.O. Smith B2847V13/4 HP full-rated 56Y pool motor, 1.24 THP
- A.O. Smith B28481 HP full-rated 56Y pool motor, 1.65 THP
- A.O. Smith B2841V11 HP full-rated 56Y pool motor, 1.65 THP
- A.O. Smith B28581.5 HP full-rated 56Y pool motor, 2.25 THP
- A.O. Smith B6253/4 HP pool booster motor, 1.125 THP
- A.O. Smith BN35V11.5 HP 48Y pool/spa motor, 1.5 THP
- A.O. Smith BN40SS2 HP 48Y pool/spa motor, stainless shaft
- A.O. Smith BN512/0.25 HP two-speed 48Y pool/spa motor
- A.O. Smith H536L1.5 HP 3-ph fan & blower motor
- A.O. Smith EM37461/2 HP TEAO condenser fan motor