Century 1.5 HP Square Flange 48Y Up Rate EE Motor - UQC1152



Part # UQC1152

By Century Motors

  5 Average  



Part # UQC1152

Warranty 1 Year

Alternate Part #'s 11802, EUQC1152, K48L2PA105, K48L2PA105A6, UQC1152

Product Description

Voltage 115/230, Max Amps 115V = 16.0 230V = 8, Single Speed, Square Flange, RPM = 3450, Threaded Shaft, Frame = 48Y Used on the following models: Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series.

Note: NOT California Title 20 Compliant. 

California Title 20 Compliant Options:

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
1.5 HP UQC1152 Replacement Pool Motor
1.5 HP
3450 RPM
115/230 V
16/8 amp
Service Factor:
Total HP:
1.65 HP
Stock #:
Overload Protector:
Dimension Letter:
11 - 1/4 in.
Commonly Used On:
Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series
Energy Efficient:
Energy Efficient
NOT California Title 20 Compliant

?     Asked on 7/8/2020 by Todd Bell

I have a Century USQ-1152 1.5 HP motor, frame size is a 48Y. Is this motor an upgrade or should I order the same motor? Thank you.


A  Answered on 7/9/2020 by InyoPools Product Specialist Lennox H.

Hi, Todd. This UQC1152 is an energy-efficient replacement option. You will also need to get the Dura-Glas Tune Up Kit - GOKIT54.

  • Commented on 7/9/2020 by Product Owner

    Thanks, I ordered the pump from you all yesterday and now ordered the kit, hopefully it gets here quickly. Thanks.

?     Asked on 12/27/2019 by Nenad

Hi, I need to replace Flotec AT251501-01 motor. Which A.O.Smith motor would be recommended? Thank you in advance! Nenad


A  Answered on 12/27/2019 by InyoPools Product Specialist Lennox H.

Hi, Nenad. The UQC1102 is the correct replacement. You will also need the Tune Up Kit Sta-Rite Flo Tech/AquaTools/Dyna-Glas - GOKIT44.

  • Commented on 12/27/2019 by Product Owner

    Motor on my pump is 1 1/2 hp and one that you recommend is 1 hp. Is there one that is 1 1/2 hp strong? I have pool vacuum that is connected to the pump. Thank you! Nenad

    • Commented on 1/16/2020 by InyoPools Product Specialist Lennox H.

      Nenad, The HP rating of your pump have "SPL", that is NOT the true HP. However, if you want a stronger motor, you can use this UQC1152 motor. 

?     Asked on 12/13/2019 by jose

Good after noon i have a Pentair Whisperflo and the motor went out the pump model no. is WF-26 part no. 011773 motor no. 196239 1 1/2 hp and 1.65 S.F. HP what could i replace that motor with. been looking for it but the only thing that comes out is the pump with motor attach ???? thanks

A  Answered on 12/16/2019 by InyoPools Product Specialist Lennox H.

Hi, Jose. You can use this UQC1152 or the B2854 as a replacement for your model pump.  You'll also need to get the Whisperflo Pump Tune Up Kit - GOKIT32 or GOKIT32SALT

?     Asked on 10/19/2019 by Ed

I have an Emerson 1081 pool motor, model C55CXKLS, 1 HP, 3450 RPM, Frame 48Y, 7.5/15 amps. What would be the replacement motor and seal/o-ring needed? Thank you! Ed


A  Answered on 10/22/2019 by InyoPools Product Specialist Rose J.

Ed, based on the photos the A.O. Smith 1 HP Square Flange 48Y Up Rate Motor - USQ1102 would be the correct replacement motor. You would need the Tune Up Kit Sta-Rite Dura-Glas & Max-E-Glas Pump 1998 To Present - GOKIT54 for the seals.

A  Answered on 10/24/2019 by Industry Professional

Part #5238-237 no longer available

?     Asked on 9/28/2019 by John M Rowe

I have a Pentair Motor # 177450 Is this the right motor replacement for this unit. I will also need a gasket kit for this. Can you help me.

A  Answered on 10/1/2019 by InyoPools Product Specialist Hector F.

You can use this model motor however may not rest on the pump base the same way as the original which would be model B841. The seal kit for your pump is actually based on the model name or number of the front pump housing that the motor attaches to. If you cannot locate that information you can always email us some images to upload@inyopools.com so we can review and further advise. 

?     Asked on 7/8/2019 by Ian

Is this a suitable replacement for the attached and what seal kit would I need? Thanks


A  Answered on 7/9/2019 by InyoPools Product Specialist Matt S.

Hello - the correct motor replacement for your RS1000 is either the standard UST1102 or the energy efficient UCT1102. Your pump does not have a gasket kit, but the gaskets can be selected individually off this list: Hayward RS Series Parts

?     Asked on 4/10/2019 by RONALD SELBY

i need a motor for a pump model at251501-01 , motor #c48k2pa105 . what motor part# do i order ?

A  Answered on 4/10/2019 by InyoPools Product Specialist Lennox H.

Hi, Ronald. You will need to order this UQC1152 FloTech Tune Up Kit - GOKIT44.

?     Asked on 4/4/2019 by willy

I am replacing a U S Q 1152 . what is the correct replacement ?


A  Answered on 4/4/2019 by InyoPools Product Specialist Lennox H.

Hi, Willy. The USQ1102 or this UQC1152 which is the energy efficient option can be used as a replacement. 

?     Asked on 1/8/2019 by Pigsy

I'd like to replace SQ1152 motor with more energy efficient motor. Would UQC1152 be a good replacement?

A  Answered on 1/8/2019 by InyoPools Product Specialist Lennox H.

Hi, Pigsy. This UQC1152 will NOT be a good replacement, the B2842 will be your best replacement energy efficient option. 

?     Asked on 8/3/2018 by GWB

I have an Advantage Manufacturing Inc 1.5 HP 3450 RPM 18/9 Amps Thermally Protected CODE AE 1205 motor that needs replacing. Is this a comparable motor? Tjaml upi

A  Answered on 8/4/2018 by InyoPools Product Specialist Lennox H.

Hi, GWB. I will need the motor service factor (SF) rating and the frame (FR) size in order to locate a replacement motor.

?     Asked on 6/21/2018 by Herbert Blake

I need to replace the motor on a WhisperFlo pump labeled WF-26. The motor shows a A.O. Smith part 7- 177474-01. Can you tell me the most energy efficient replacement motor. Thank you.

A  Answered on 6/21/2018 by InyoPools Product Specialist Lennox H.

Hi, Herbert. The B2661 will be the most energy efficient replacement motor for Part # 7- 177474-01.  You'll also need to get the Whisperflo Pump Tune Up Kit - GOKIT32 or GOKIT32SALT.  

?     Asked on 6/7/2018 by Naum Nacea

PL 2854 motor is set by factory at 220 volts or 115 volts??

A  Answered on 6/7/2018 by InyoPools Product Specialist Hector F.

These are factory preset at 220/240 volt. 

?     Asked on 3/25/2018 by Bob

I have a 1.5 horsepower pool motor UST 1152, frame 56j,3450,115/230 volt.. It is on a EZFLO pump.. What is the replacement motor and cost and also replacement pump and motor combo cost?? Also what is the cost and time of shipping for either to 33839... Thanks Bob

A  Answered on 3/26/2018 by InyoPools Product Specialist Joe S.

Good day, if you have the UST1152 you would need to order the A.O. Smith 1.5 H.P Pool Motor Energy Efficient Round Flange - UCT1152. Guarantee is in 3 business days time in transit. (does not include weekends or holidays)

?     Asked on 3/24/2018 by

I have a Hayward Tri-Star Max Flow Rate SP3210Z1M pump 1.50 HP, 1.10 SF. The part number on the motor is 7-F56AA12A04-24. It appears that the specs for this motor line up with the specs on my existing motor. Would this be a suitable motor replacement?

A  Answered on 3/26/2018 by InyoPools Product Specialist Hector F.

Your actual replacement motor model would be the B854 and the seal kit is the GOKIT81

?     Asked on 3/1/2018 by Jan

(1) Can I use this model (UQC1152) to replace my existing USQ1152 Mod. C48L2PA105C5 VOLTS. 115/230 HP. 1 1/2AMPS. 17.5/8.75 PH. 1 CODE. J RPM. 3450 FR. 48Y HZ. 60 MAX LOAD AMPS. 19.2/9.6 SF. 1.1 TYPE. UAC ? (2) My pump model is STA-RITE P2RA5F-182L. Can I choose UQC1152 instead of USQ1152? What are the difference between USQ1152 and UQC1152? (3) Which Tune Up Kit shall I purchase for this motor? Thanks for your further advice!

A  Answered on 3/1/2018 by InyoPools Product Specialist Kevin G.

Hello, yes this one can be used to replace your USQ115, this is just the energy efficient version. The tune-up kit that you need would be the GOKIT54. Please be advised that this tune up kit is designed for models manufactured from 1998 to current. If you have an older model or are unsure about what gokit to chose, I would review this article that goes more in-depth.  

?     Asked on 7/30/2017 by Matt Chittenden

I have a 1 1/2 hp marathon motor model# 5KCR39SN2823AX hayward pump, looking for new motor options. What do you recommend?

A  Answered on 7/31/2017 by InyoPools Product Specialist Lennox H.

Hi, Matt. The Century UCT1152 motor is the replacement for the Marathon 5KCR39SN2823AX motor. 

?     Asked on 7/28/2017 by Larry

Looking for a replacement motor for a Pentair 7-177450-03, rpm 3450, 1.50 HP. Sounds like a rock tumbler.

A  Answered on 7/28/2017 by InyoPools Product Specialist Hector F.

Your replacement motor is the model B841

?     Asked on 7/6/2017 by Magnetek model wf6c

What replacement can I use for magnetek model wf6c, hp 1 1/2 sf 1.47, 56y, rpm3450, colts 230/115, phase 1, HZ 60?

A  Answered on 7/13/2017 by InyoPools Product Specialist Lennox H.

Hi. The Century B2842 or SQ1152 Motors are compatible with the WF-6 pump. I would also recommend getting the Whisperflo Pump Tune Up Kit - GOKIT32 or GOKIT32SALT

?     Asked on 5/18/2017 by lisa

can I use this motor for part #7-177450-03. My old motor says 1.5hp on the pump, but the replacement on your website has 1 hp on the pump?

A  Answered on 5/18/2017 by InyoPools Product Specialist Hector F.

Technically you could use this motor but it is a 48 frame which means that it is skinnier than your original hence may not rest on your pump motor stand. The model that comes up as a 1 hp has a total horse power of 1.5. The label just can be confusing. The correct model replacement is the B841.

?     Asked on 4/18/2017 by joe broccuto jr

Is this motor a replacement for my existing motor cat. # ESQ1152?

A  Answered on 4/18/2017 by InyoPools Product Specialist Charlie R.

Joe, Yes, the UQC1152 is a suitable replacement for your ESQ1152.

?     Asked on 4/1/2017 by John Hill

I want to replace a 1.5 hp AO Smith, CAT B 854, frame 56Y motor with a replacement energy efficient motor. Suggestions?

A  Answered on 4/3/2017 by InyoPools Product Specialist Lennox H.

Hi, John. You can use the B2841 56Y Full Rate Motor or this UQC1152 48Y Up Rate motor as an energy efficient replacement for the B854 motor.

?     Asked on 3/29/2017 by kent smith

Looking to replace this motor C48L2PA105 with this energy efficient motor. Is this the correct replacement? Which tune up kit for this motor. This is this model number of the whole pump assembly - MPRA6F-148L Sta-rite. Dyna Glas. and I'm 99.9% sure it was put together after 1998 as the home was built in 2004. Thanks.

A  Answered on 3/29/2017 by InyoPools Product Specialist Scott W.

Yes, the UQC1152 is the energy efficient motor and the tune up kit is part number GOKIT47.

?     Asked on 1/9/2017 by jannelle

I have a Flotec AT251501-01 i need to replace that part what can i get please HELP ASAP

A  Answered on 1/10/2017 by InyoPools Product Specialist Adam Y.

Good morning Jannelle, Here is a list of all the parts including the motor Flotec AT251001 & AT251501 Parts. You will need to replace the shaft seal and I would also recommend changing the diffuser o-ring and housing o-ring at the same time.

?     Asked on 8/29/2016 by Kathie

I replaced our 12 year old motor with a UQC1152 Emergy Efficient A.O. Smith 1 1/2 H.P. motor from your company 2 1/2 years ago. The old one was getting very noisy so the new one was great. But now, after only 2 1/2 years the newer one is making some horrible noise. Is there anything that can be done about that other than replacing the motor again? I would think this one should have lasted at least 10 years.

A  Answered on 8/30/2016 by InyoPools Product Specialist Scott W.

Unfortunately, pump motors don't last as long as they use to. The bearings are going out on that motor though, so you could just replace the bearings. That part number for the bearings is 5270-31.

?     Asked on 7/25/2016 by Debbie

Hello, I'm looking to replace a Pinnacle Pump #342352 (purchased 5/2006) what is comparable or it's replacement. The impeller is bad but want to replace entire pump. Thanks.

A  Answered on 7/28/2016 by InyoPools Product Specialist Lennox H.

Hi Debbie, The Speck Easy Fit MXG 1.5 HP Pump (IG281-1150M-0DG) is the pump that will match up with least re-plumping work.

?     Asked on 5/16/2016 by Keith

I have a Flotec In ground Pump Model # AT251001-01 - I am needing to replace the motor with a 1-1/2 hp - will the A. O. Smith motor bolt up to the pump ? Can you tell me the compatible A.O. Smith parts I would need? Thanks

A  Answered on 5/20/2016 by InyoPools Product Specialist Lennox H.

Hi Keith, This motor will allow you to upgrade you Flotec AT251001-01 pump from 1HP  to 1.5HP. You will also need to replace your current impeller with p/n C105-236PB and confirm that your system can handle the additional water flow.

?     Asked on 4/15/2016 by

what replacement motor would be compatible with a hayward superpump model c48l2n134b4 amps 18.6/9.3 motor

A  Answered on 4/15/2016 by InyoPools Product Specialist Hector F.

Your replacement motor is the UST1152.

?     Asked on 2/27/2016 by Brian

Will there be any problems with replacing a K48L2PA105A6 with a B2982T given that the former is a 48 and the latter is a 56?

A  Answered on 2/29/2016 by InyoPools Product Specialist Lennox H.

Hi Brain, You will not have any issues replacing the K48L2PA105A6 with the B2982T. You will just have to remove the spacer from the motor stand so that the B2982T motor sit properly if your pump currently have one.

?     Asked on 2/26/2016 by Brian

What would be a 2-speed or variable speed pump replacement for a 1.5 hp single speed pump. : K48L2PA105A6. UST1152.

A  Answered on 2/26/2016 by InyoPools Product Specialist Lennox H.

Hi Brian, The 2-Green 1 HP Full Rate Dual Speed w/ Digital Controller (B2982T) would be the 2-Speed replacement or the V-Green 1.65 HP Variable Speed Motor (ECM16SQU) would be the variable speed replacement base off of your current motor.

?     Asked on 2/17/2016 by John

I have a Whisperflo 1.5 HP square flange pump motor B2854. Will this motor work on my pump even though it is listed as 48y while mine is a 56y? And is this the best energy saving motor short of upgrading to a two-speed or vsp pump? We are about to install a solar system on a second story roof and the rep said to go with a standard duty pump motor.

A  Answered on 2/17/2016 by InyoPools Product Specialist Andy O.

Hello John, The UQC1152 Energy Efficient A.O. Smith 1 1/2 H.P Square Flange Up Rate Motor will be the most energy efficient option short of going to a dual or variable speed motor. The only difference between 48y and 56y is that the diameter of the barrel on the motor is 1 inch smaller on a 48Y as opposed to the 56Y.

?     Asked on 12/6/2015 by steve

I have a dyna glass 1.5 hp spl kw 1.1, motor 1 phase amps 15.317.6 rpm 3450 model # c48k2pa105 what would be the replacement motor

A  Answered on 12/7/2015 by InyoPools Product Specialist Lennox H.

Hi Steve, Based on the model # C48K2PA105 the A.O. Smith 1 H.P Square Flange Up Rate Motor (USQ1102) would be the correct replacement motor.

?     Asked on 9/13/2015 by Matt

I have a motor that has the following specs AMPS - 15/7.5 FR - 48 Volts - 115/230 RPM - 3450 HP 1.5 SF - 1.0 Can I use this replacement motor? If yes, will I need anything else when I replace the motor?

A  Answered on 9/17/2015 by InyoPools Product Specialist Lennox H.

Hi Matt, The A.O. Smith Energy Efficient 1 1/2 H.P Square Flange Up Rate Motor (UQC1152) can be used to as a replacement if the pump you have uses a square flange motor. To be certain if the UQC1152 motor and to get you the correct seal we will need to know the manufacture and model of the pump housing.

?     Asked on 7/4/2015 by David

I have a 1999 Pac-Fab Ultra-Flow pool pump and the motor has been very loud this year - It looks like I need to replace the motor but I can't find anything online with the exact replacement motor - the motor has a Part # 10-177450-03, is 1 1/2 HP with SF 1.1, it is 7.8 - 7.4/14.8 amps, 208/230 - 115 v and 3450 RPM. It looks like your replacement motor UQC1152 would work, but not sure?

A  Answered on 7/5/2015 by InyoPools Product Specialist Patrick P.

Hi David, you would require the 1 HP Full Rate Ultra Flo Motor you currently have a 1-1/2 HP Up Rate Motor which is exactly the same as 1 HP Full Rate Motor. We have an article explaining Why a 1 HP Full Rate Motor is the same as 1-1/2 HP Up Rate Motor which may be helpful to read. When replacing your motor we would also suggest an Ultra Flo Tune Up Kit.

?     Asked on 5/11/2015 by Bill

Hi, I have a 15 yr old Sta Rite Dura Glass II 1.5 hp motor & pump, the motor is shot, bearing making noise. Pump is P4RA6F - 187L. Motor model from nameplate is AO Smith C48L2PA105 Frame 48Y. Manual says the motor for this pump is A100FLL When searching internet it says motor is USQ1152. Is this EE model ??

A  Answered on 5/11/2015 by InyoPools Product Specialist Patrick P.

Hi Bill, The direct replacement for the C48L2PA105 Duraglas P4RA6F - 187L would be the Standard Efficiency USQ1152 Pool Motor The motor on this page UQC1152, would most definitely work as a replacement for your  Duraglas P4RA6F - 187L and it would be the energy-efficient model. So the USQ1152 is the standard efficiency model and the UQC1152 is the energy-efficient model.

?     Asked on 7/21/2012 by Guest

Will this motor work on a P2RA5F-182L sta rite pump arrangement?

A  Answered on 7/21/2012 by InyoPools Product Specialist Patrick P.

Yes the UQC1152 would be the proper energy efficient replacement motor for the Sta Rite DuraGlas P2RA5F-182L pump.

?     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.


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