A.O. Smith 3 HP Square Flange 56Y Full Rate EE Motor - B2844



Part # B844

By Century Motors

  5 Average  



Part # B844

Warranty 1 Year

Manufacturer Code B2844

Alternate Part #'s 075237S, 10-165202-07, 1203012540, 16362, 165202, 165892, 168455, 168888, 177116, 177453, 186238, 196157, 196242, 196258, 1D190, 35-5395, 355395, 5KCR49ZN2499X, 5U157, 5U161, 7-165202-07, 7-168888-07, 7-177453-01, 7-177453-03, 7-196258-07, 71317, 8-168888-06, 8-168888-07, 8-177453-03, AE100HHL, B2844, B844, B844A, C1449, EB844, F56AA46A04, SQ1302, SQ230E, SQH30FL1E

Product Description

A.O. Smith Centurion replacement motors for Pentair WhisperFlo, energy efficient, full rated pumps. Specifications: HP = 3, RPM = 3600, Voltage = 208-230, Amps = 15.0-13.6, Service Factor = 1.15, Frame = 56Y, Shaft = Threaded.

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
3 HP B844 & B2844 Replacement Pool Motor
3 HP
3450 RPM
208 - 230 V
15.0 - 13.6 amp
Service Factor:
Total HP:
3.45 HP
Stock #:
B844 or B2844
Overload Protector:
Dimension Letter:
14.4 in.
Commonly Used On:
Pentair WhisperFlo
Energy Efficient:
Energy Efficient
NOT California Title 20 Compliant

?     Asked on 7/28/2019 by Elton Lesikar

I have a Hayward Tristar pump (SP3230EE)that is driven by a Century motor (SP3230Z1BE). I need a replacement motor and seal kit. Can you please advise the correct equipment. Thanks See Pictures


A  Answered on 7/28/2019 by InyoPools Product Specialist Lennox H.

Hi, Elton. This B2844 motor is the correct replacement. You will also need the TriStar Tune Up Kit - GOKIT81

?     Asked on 7/5/2019 by Nick

Hi, I have Pentair clean & clear plus ultra-flow with 3 hp Magnetek Century centurion pump part number 7-177453-03 (picture attached). It becomes very noisy recently, I found a few bearing balls. Is this A.O. Smith 3 HP square flange 56Y single speed motor the right replacement? Do I need new impeller, diffuser etc to switch the motor? a seal kit? Thanks, Nick


A  Answered on 7/5/2019 by InyoPools Product Specialist Lennox H.

Hi, Nick. This B2844 is the correct replacement. You do not need to replace the impeller, diffuser, if they're in good condition. As for the tune up kit, the pump housing model is needed. 

?     Asked on 7/2/2019 by Jalil Mloukhiyeh

I have this model motor on a pentair pool pump: pool pump motor part 7-177453-03 Is this the right replacement?


A  Answered on 7/2/2019 by InyoPools Product Specialist Patrick P.

Yes, this is the correct replacement motor for the motor included in your photo. You will also need a Pentair WhisperFlo Seal Kit when you replace your motor. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.

?     Asked on 6/19/2019 by

Will the B2844 work with the Pentair WFE-12 WhisperFlo Full-Rated Energy Efficient 3HP Pool Pump, 230V

A  Answered on 6/19/2019 by InyoPools Product Specialist Hector F.

Yes, this motor would be a single speed replacement for the WFE-12.

?     Asked on 6/4/2019 by Ramon Ramos

Do you have expedited shipping?

A  Answered on 6/4/2019 by InyoPools Product Specialist Patrick P.

Yes, we do, it is offered during checkout and you will be presented the prices when you enter your zip code.

?     Asked on 5/27/2019 by Derek

Hi. I have a Pentair WhisperFlo with B7248 2HP standard efficiency motor. It’s a 1Ok gallon pool with 2” piping. Can I upgrade to the AO Smith 3 HP high efficiency?? Thank you..

A  Answered on 5/27/2019 by InyoPools Product Specialist Patrick P.

Hi Derek, It is possible to replace your motor with a 3 HP and replace the impeller and diffuser to 3 HP but you may have issues with going with such a large ,pump. Normally for a 10,000-gallon pool you could use a 3/4 or 1 HP pump. Some of the issues with going with a pump this large are... 2" pipe can only accommodate 120 GPM and the 3 HP will exceed 120 GPM so you will not be getting the full capacity of this pump with using 2" pipe, the 3 HP is expensive to operate, finally you need to make sure your filter can handle the output of the pump which would be in the 120-150 GPM Range. You should have a label on the side of your filter which says max GPM. If you decide this is the route you want to go let us know and we can give you the part #'s for the impeller and diffuser.

  • Commented on 5/27/2019 by Product Owner

    I’m not sure which model is mine. The sticker is weathered. Gpm should be good for 3HP? How much more expensive would 3HP high efficiency be compared to 2 HP standard efficiency? Thank you..


    • Commented on 5/29/2019 by InyoPools Product Specialist Patrick P.

      Hi Derek, The price of the 2 HP B2748 Replacement Motor is $272 Where this 3 HP motor is $339 also on the 3 HP you will roughly another $100 in parts to upgrade to 3 HP as you need to replace your impeller and diffuser if you go up in HP.

?     Asked on 12/31/2018 by Patrick Carter

I have a Hayward 3HP pump with a twist on top. I tried uploading pics but it wouldn't work. Is this the motor I need ? with my motor part# 7-f56aa46a04-08 Frame Y56Y Type CX. I also need a seal kit. What would be the correct seal kit for this motor to my wet end?Thank you

A  Answered on 1/3/2019 by InyoPools Product Specialist Joe S.

Good day, yes based off part# 7-f56aa46a04-08 the 3 HP Motor EE - Full Rate (B2844) would be the correct unit.

?     Asked on 11/14/2018 by George

I have a Pentair 3 HP (SF HP 3.45) motor #177453 for my pool waterfall. WFE-12 / 011516 208-230V 3450RPM S.F. 1.15 Max amps 15.0 13.6 KA Code G Self priming pump 4 pictures attached Also while I am replacing the motor what pump seals should I replace. The last 2 pictures are my 3HP variable speed pool pump. What pump seals do I require for this as I might as well be preventative after 6yrs of pool ownership Thanks George 832-878-6972 cell


A  Answered on 11/15/2018 by InyoPools Product Specialist Joe S.

The seals we would recommend for both units would be Tune Up Kit Pentair/Purex Whisperflo Saltwater - GOKIT32SALT

?     Asked on 6/19/2018 by Steve Kraynak

Is this a direct replacement for WFE-12 motor (Pentair Pump)? What kit if any do I need for installation when I change out motor (shaft seal? etc.)

A  Answered on 6/19/2018 by InyoPools Product Specialist Hector F.

Yes, this is a replacement for that Whisperflo model. We recommend to also get the seals and gaskets being part number GOKIT32 for a chlorine pool and a GOKIT32SALT for a saltwater swimming pool. 

?     Asked on 6/7/2018 by Paul

I currently have a Century Centurion 2.5HP Part # 8-16501-40 type CX, FR Y56Y. Can I upgrade to this 3HP motor?

A  Answered on 6/9/2018 by InyoPools Product Specialist Lennox H.

Hi, Paul. You can upgrade to a 3 hp motor reusing your existing impeller and diffuser. However, if you want to increase water flow, you will have to change your impeller and diffuser after confirming if your filter, plumbing, and system is sufficient. To determine that you will have to calculate the Total Dynamic Head (TDH) of your pool, then use the pump performance curve to determine the flow.

?     Asked on 6/7/2018 by MLSMith

I recently moved into a home with an inground pool and am trying to calculate the turnover rate for this pool. I am trying to track down the GPM on a Purex Trition, Centurion part 7-16888-07 pool pump. Thanks!

A  Answered on 6/7/2018 by InyoPools Product Specialist Lennox H.

HI, MLSMith. The flow rate is calculated based on the Total Dynamic Head (TDH) and the pump housing model, not the motor. 

?     Asked on 6/3/2018 by

I currently have a Pentair WE-12/011583 pump. Is this the correct replacement motor?

A  Answered on 6/3/2018 by InyoPools Product Specialist Patrick P.

Yes this is the correct replacement motor for a a Pentair Whisperflo WE-12 011583 We would also suggest a GoKit32 Tune Up Kit

?     Asked on 5/13/2018 by Jan gaumer

I’m trying to replace an old AO Smith 3HP centurion pump part number 7-168455-08. Rpm 3450, Hz 60, PH 1 SF 1.15, volts 230, amps SF 14.1 ENCL DP, time cont, AMB 40 C, serial BY 11-07 1081 pool pump duty mount HOR 12 with vent holes down. Is this the replacement for this part? Please help. Can’t find this anywhere.

A  Answered on 5/13/2018 by InyoPools Product Specialist Hector F.

Yes, this is the current correct motor replacement for your model. 

?     Asked on 10/14/2017 by Jon

I currently have a Jandy JHP 1.5 pump and want to upgrade to a 3.0 hp A.O. B844 motor. I have the upgraded diffuser and impeller but need to know if this motor will work with my pump housing. I also need to know what shaft seal I need for this motor. This will be used for various water features. Please enlighten me with anything I may have forgotten.

A  Answered on 10/16/2017 by InyoPools Product Specialist Lennox H.

Hi, Jon. This B2844 motor will not work with the Jandy JHP pump. The Century B131 is the 3HP replacement for the JHP pump. I'll recommend that you get the Jandy JHP + JHPU Pump Series Tune Up Kit - GOKIT77

?     Asked on 9/3/2017 by greg

will this replace my pool/spa whisper flo model WF-12? Thanks Greg

A  Answered on 9/5/2017 by InyoPools Product Specialist Lennox H.

Hi, Greg. Yes, this B2844 motor is the replacement for the WF-12 pump. The Whisperflo Tune Up Kit - GOKIT32 or GOKIT32SALT is a recommended item when replacing the motor on the Whisperflo Pumps.

?     Asked on 7/10/2017 by rick

what pump do I need with the B2844 motor? thanks-rick

A  Answered on 7/10/2017 by InyoPools Product Specialist Patrick P.

Hi Rick, the B2844 motor is used with several different pumps. If you are looking for the complete pump and motor then I would suggest the Pentiar 3 HP Whisperflo as that complete pump set up includes the B2844 motor.

?     Asked on 7/10/2017 by George Farinelli

What is the size of the Run Capacitor on the B844 Motor and is there also a Start Capacitor

A  Answered on 7/10/2017 by InyoPools Product Specialist Lennox H.

Hi, George. The  50 MFD 370 VAC Run Capacitor - RD-50-370 is what is used on the B844 motor, it does not have a start capacitor. 

?     Asked on 4/12/2017 by Chuck

have your motor (3 HP Motor EE - Full Rate (B2844)) in my cart but also want to replace shaft seal and pump o-rings, impeller should be fine unless already included in kit. Challenger PAC-FAB 3 HP CHII-N1-3PE 1-13-E97 / 34-5209 self priming pump. I think it is a (Pentair Pac Fab Challenger pump seal go-kit (SKU: GO-KIT5-9)) please advise, Thanks

A  Answered on 4/12/2017 by InyoPools Product Specialist Scott W.

The GOKIT5 is the seal kit you need for your Pentair Challenger.

?     Asked on 4/11/2017 by

I think that this is my replacement pump for Part # 7-177453-03. My only question is my pump has an approximately 1" grey plastic pipe coming out of the rear of the unit making a left hand turn and going forward. It doesn't look like your pump has an opening for this grey tube. Can you advise? Also how difficult are these pumps to change out and do you need any type of sealant? Thank you, Lane

A  Answered on 4/11/2017 by InyoPools Product Specialist Scott W.

The grey pipe is for the electrical, on all of our motors you are able to connect that grey pipe to cover your wiring that goes from your pump to your breaker.

?     Asked on 3/25/2017 by

I have a Jandy SHPF3.0 pump with a Century 196157-07 motor. The bearings are beginning to go. What is the replacement motor and seal? Thanks Dave

A  Answered on 3/27/2017 by InyoPools Product Specialist Lennox H.

Hi, Dave. The B844/B2844 is the correct replacement. The seals can be located on the Jandy Stealth (2006-Current) SHPF & SHPM Parts page.

?     Asked on 3/22/2017 by Happy

Currently have a Century Centurion B2844. Sound like the motor is going out as it's becoming noisier. I'm just wanting to place the pump but my wife is dead set on replacing it with a variable speed. What would I need to do to keep her off my back (ie, what model of variable speed pump and whatever else I'll need)? Also, our pool is pretty small using your formula around 4,000 gallons.

A  Answered on 3/22/2017 by InyoPools Product Specialist Lennox H.

Hi, Happy. You have a large pump for such a small pool. We do not have a replacement variable speed motor that would replace the B2844 motor. You would have to replace the entire pump with the EcoStar - SP3400VSP or Intelliflo - 011018 if you need such a large pump. I would recommend calculating the feet of head of your pool using the steps in our How To Size a Pool Pump and How Do I Calculate Feet of Head for My Pool? to make sure the pump you have is not oversized.

?     Asked on 1/7/2017 by randy

I have the Whisperflow 1.65 hp with 2" ports I want to increase the hp to the B2844 3 hp, do I need to change the impeller and diffuser? if so can you recommend the one for the 3 hp Thank you in advance

A  Answered on 1/9/2017 by InyoPools Product Specialist Lennox H.

Hi, Randy. Along with the B2844 motor; you will also need to replace the following items, Impeller - 073131, Diffuser - 072928 and get the Pentair/Purex Whisperflo Tune Up Kit P/N GOKIT32 or GOKIT32SALT.

?     Asked on 8/9/2016 by Mike

What size capacitor is used for the listed motor? Volts/MFD. Thanks!

A  Answered on 8/9/2016 by InyoPools Product Specialist Scott W.

The part number for that capacitor is 5270-06. It's a 50-370.

?     Asked on 7/24/2016 by Francisco Escobar

Hello, Have a Magnatek 177453-03 pool motor, this morning it did not start and the breaker was flipped. I flipped the breaker back on and it trigger off again. I remove the motor and check for any wire to wire contact in the conduit, removed the motor back cover to see if there was any obvious problem, burned stain or odor but everything looked ok, then I did a test run, for a second it sounded like if it was going to start but the breaker trigger again. Any suggestions?

A  Answered on 7/27/2016 by InyoPools Product Specialist Lennox H.

Hi Francisco, It sounds like the motor has failed and will have to be replaced if it's tripping the breaker.

?     Asked on 7/22/2016 by Clark

I have a Triton whisper flo model WF-28 2 HP pool motor that has just seized up. I am thinking of going to a 2 1/2 or 3 HP replacement motor. I have a square flange. I need to know if there is anything I will need to do by replacing with a higher HP motor and would I see a noticable difference in the water flow over the raised hot tub as the water is flowing into the pool? and what is the turnaround time on geting the motor to me? I am in Pinehurst, TX 77362

A  Answered on 7/24/2016 by InyoPools Product Specialist Lennox H.

Hi Clark, First you will have to calculate if your filter can handle the additional water flow or else you will have unclean and unfiltered water. Our How To: Size a Pool Pump guide will provide you with the info needed. You will also need to replace the impeller, diffuser and get the tune up kit. If all items are in stock they can be shipped out the next business day.

?     Asked on 6/4/2016 by Mike

Is this the correct replacement for Part 7-165202-07 and if so, do I need any additional parts? ( covers, etc.). The other numbers seem to match ( except for Insul class which is B on my existing pump). Serial # is CA11-02 thanks

A  Answered on 6/10/2016 by InyoPools Product Specialist Lennox H.

Hi Mike, The B2844 is the correct replacement for p/n 7-765202-07. You will need to replace the seals in the pump bit we will need to know the manufacturer and model of that unit.

?     Asked on 5/24/2016 by jackie


A  Answered on 5/24/2016 by InyoPools Product Specialist Patrick P.

Hi Jackie this Challenger Performance Document should do the trick.

?     Asked on 12/8/2015 by Kevin Hickerson

What is the warranty on this motor ?

A  Answered on 12/8/2015 by InyoPools Product Specialist Brian M.

Effective with motors manufactured in August 2004 and later, the warranty policy on motors will change to: Pool motors are warranted to be free of defects in workmanship and materials for a period of 12 months from the date of installation.

?     Asked on 7/17/2015 by julia

I just bought this B2844. Just noticed that it has an open back end. I think they are vent holes. Wondering how to protect it from getting wet?

A  Answered on 7/17/2015 by InyoPools Product Specialist Bob D.

Hi Julia. We sell a protective motor cover for just that purpose unless you have another type. However you decide to do it keeping it as dry as possible will extend the life of the motor. Thank you for the inquiry and best of luck.

?     Asked on 7/14/2015 by Julia

Which go-kit should I purchase with b2844? Any other parts I may need? Thanks,

A  Answered on 7/14/2015 by InyoPools Product Specialist Hector F.

The go kit that you will need to use is based on the model of the front plastic pump housing that the motor is mounted to. Any other parts needed will be based on the condition of them once the pump is taken apart and inspected.

?     Asked on 7/10/2015 by julia

I have a Century Centurion part #: 7-196157-07 spa motor that keeps on tripping breaker when being turned on. Which motor replacement part do I need to get? Thanks,

A  Answered on 7/10/2015 by InyoPools Product Specialist Patrick P.

Hi Julia, The B844 (B2844) motor listed on this page would be the correct replacement for your Century Centurion part #: 7-196157-07.

?     Asked on 7/6/2015 by Marlon

I have a whisperflo 2 hp motor that just went bad. I have a spa attached to my pool and was thinking of upgrading to a 3 hp. Would I need a different impeller or would i be good with just the motor swap? Thanks

A  Answered on 7/6/2015 by InyoPools Product Specialist Dennis R.

Marion - When you go to a 3 HP EE motor (B844), you will also have to upgrade the impeller to 5074-27E and the diffuser to 5074-13. We also recommend that you replace the seal and gaskets with GOKIT32 or GOKIT32SALT. If you choose not to replace all the gaskets, you will have to change the shaft seal as a minimum. See key # 16 in this Whisperflo parts list. Thereare three options OEM, Generic and Saltwater pools

?     Asked on 5/18/2015 by

I have a haywood northstar 2.7 hp 2.0 frhp/1.35 sf model k63cxfbh-4928 that needs to be replaced. It is very loud. I'm assuming it needs to be replaced. What would be comparable to replace it with? Thank You,

A  Answered on 5/18/2015 by InyoPools Product Specialist Patrick P.

Yes we would suggest replacing your motor and you would require the Hayward 2 HP Full Rate Replacement Motor. You will also need a shaft seal and the northstar pump has used two shaft seals of the years which I have listed here... Hayward Northstar Shaft Seal 1998 - 2007 or Hayward Northstar Shaft Seal 2008 - Present.

?     Asked on 4/19/2015 by Jean DELICE

Is this pump loud? I currently have a 2 HP General Electric pump for my lawn but very noisy. I'm looking for a 3 HP but quiet.

A  Answered on 4/19/2015 by InyoPools Product Specialist Alex V.

Jean, The motors are not lound. Please keep in mind that this is a pool motor and maay not be suitable for your application.

?     Asked on 3/4/2015 by ralph burton

I need to replace a pool pump motor, the part # is 0-196329-20 type cp 3 hp 3450 rpm cat m-s Q1302v1 frame 756y volts 208-2230 this is a century ac motor that is attached to a purex triton whisper flow pump. I don't see the exact match on you list. is there one that will fit and what extra parts that I would need?

A  Answered on 3/5/2015 by InyoPools Product Specialist Robert M.

Hello Ralph - The correct replacement motor is model SQ1302. We would also recommend replacing the seals when you replace the motor. The seal kit for regular water is GOKIT32 and the kit for saltwater is GOKIT32SALT.

?     Asked on 2/16/2012 by Guest

I just finished replacing the shaft seal on my booster pump. As soon as I turned the pump on water was leaking from the shaft seal. Is it defective or am I doing something wrong?

A  Answered on 2/16/2012 by InyoPools Product Specialist Patrick P.

Depending on the model, the installation of a booster pump shaft seal can be slightly different than a pool pump shaft seal. Some booster pump and pool pump shaft seals require that a silicone sealant be used on the outer areas of the metal seat of the shaft seal. The seal will need to be lightly hammered into the body of the pump. You can use a 1 inch PVC coupling or a piece of 1 1/4 inch PVC pipe and a rubber mallet. This procedure will apply to any pool pump or booster pump using a >PS-1000 style shaft seal.

?     Asked on 1/19/2012 by Guest

I'm trying to replace the motor on my pool pump but all these numbers and abbreviations on the motor label are really confusing me. What do they mean?

A  Answered on 1/19/2012 by InyoPools Product Specialist Patrick P.

Replacing a pool pump motor is not as difficult as it seems. You can try looking here. If you need help figuring out what the information on your label means. If you are still having difficulty figuring it out you can call us at our toll free number or you can send us a photo of your motor label here.

?     Asked on 1/12/2012 by Guest

Why should I purchase a Tune Up Kit?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.

?     Asked on 1/12/2012 by Guest

Why do I need to purchase a new shaft seal?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.

?     Asked on 1/11/2012 by Guest

What is Service Factor?

A  Answered on 1/11/2012 by InyoPools Product Specialist Patrick P.

Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.


Est. Repair Time

1 to 2 hrs

Tools Needed

Nut Drivers, Socket Set

My filter pump motor on my saltwater pool went out.

Written on 9/17/2019 by Guest

I searched for a replacement motor and few sites gave the replacement model numbers for the replacement motors they carried. INYO pools provided the exact model number matching the A O Smith motor they inventoried.

I simply placed the order and had it at my doorstep in a couple days. I am impressed with the prompt service. Having your filter pump out in the peak of summer in Southern Louisiana can wreck havoc on a saltwater pool. However, INYO Pools was prompt and I was able to quickly replace the motor with the necessary replacement O-ring kit.

A note on replacing the pump shaft seals; to remove the old seal, I used a 3/4" PVC collar to tap out the seal and a 1" PVC collar to seat the seal. It worked perfectly.

Were these instructions helpful? 


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