A.O. Smith 1 1/2 H.P Square Flange Full Rate Motor - SQ1152



Part # SQ1152

By A. O. Smith

  4.79 Average  



Part # SQ1152

Warranty 1 Year

Dimensions 14" L x 8.5" W x 6.5" D

Alternate Part #'s 10-168345-25, 10-168787-07, 14728, 16360, 165889, 168345, 168787, 182827, 186902, 19142, 1K054, 2K407, 5KCR48UN2493X, 6K494, 7-168345-25, 7-168787-07, 7-168787-87, 7707, 8-168345-25, 8-168787-01, 8-168787-02, 8-168787-06, 8-168787-07, 89142, 93650, A100EH2, A100FH, A100FHL, A100FL2, A400FH, AE100EHL2, AE100FH, AE100FHL, AE100FLL2, B2842, B364, B747, B842, B849, B865, B875, C1172, C1307, C48A23A24, C48C24C09, C48M2EC11, C48M2EC11A3, C48M2EC15, C48M2PU102, C48M2PU103, C56M2B10, C56M2B6, C56M2E11, C56M2E11A1, C56M2E11A2, C56M2E1UA1, C56M2EA11, C56M2EA11A1, C56M2EA11A2, C56M2EC11, C56M2EC11C2, C56M2P100, C56M2P101, C56M2P104, C56M2P104A1, C56M2S11, C56M2S11A1, C56M2S11A2, C56M2S11A3, C56M2S11C1, C56M2S11C2, C56M2S11C3, C56M2SA11C2, EB842, EB858, evsq1152, EZ150, K48M2P101, K48M2P104A1, K48M2PA104A2, K48M2PA105, K48M2PA105A2, K48M2PA105A6, K48M2PA105C3, K48M2PA105C4, K48M2PM100, K48M2PU100, K56M2P100, K56M2PM100A2, M56650, MTR-266, MTR266, S88-382, SQ1152, SQD15FL1, SQD15FL1E, SQH15FL1E, V14728

Product Description

Voltage 208-230, Max Amps = 10.4, 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.

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
1.5 SQ1152 Replacement Pool Motor
1.5 HP
3450 RPM
230 V
10.4 amp
Service Factor:
Total HP:
2.21 HP
Stock #:
Overload Protector:
Dimension Letter:
13 - 1/4 ft.
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

?     Asked on 9/20/2018 by Rick

What size conduit elbow goes at back of motor where electrical is

A     Answered on 9/20/2018 by InyoPools Product Specialist Lennox H.

Hi, Rick. A 1/2" conduit will be required for this motor. 

?     Asked on 9/3/2018 by Gerson Silva

K48M2PA105C3 Is useable on 208 volt 1 Ø, nameplate said 230/208

A     Answered on 9/3/2018 by InyoPools Product Specialist Lennox H.

Hi, Gerson. This motor is not rated at 208 volts, however, you can use the B2842 EE motor.

?     Asked on 5/8/2018 by

Do I have to replace the pump seal?

A     Answered on 5/8/2018 by InyoPools Product Specialist Hector F.

When replacing a motor it is highly recommended to replace the main seal at the least. You will need to know the model name or number of the front pump housing in order to locate the correct seal or seals. If you are not sure then you can email us images of the housing to upload@inyopools.com so we can try and identify it. 

?     Asked on 4/5/2018 by Jose Pelayo

Does this unit have the reverse thread in the shaft for the impeller screw?

A     Answered on 4/5/2018 by InyoPools Product Specialist Kevin G.

Hello, this motor does not require the use of an impeller screw. 

?     Asked on 4/2/2018 by scott wagner

I need motor K48L2PA105C3 for sta-rite max-E-pro

A     Answered on 4/3/2018 by InyoPools Product Specialist Hector F.

Your replacement motor is the model QC1102

?     Asked on 2/26/2018 by Johnny

Can I replace a sq1152 with ab841 ee motor. Whisperflow pump. And will it be a direct fit

A     Answered on 2/27/2018 by InyoPools Product Specialist Lennox H.

Hi, Johnny. You can use the B841 motor as a replacement to the SQ1152 motor, however, you also have to replace the Impeller. If you don't want to change any other parts other than the seals, the B842 EE, or the B858 standard are the direct 56Y frame replacement options. Whichever motor you decide to get, I will recommend getting the Whisperflo Tune Up Kit -  GOKIT32 or GOKIT32SALT

?     Asked on 9/11/2017 by Mike L

I have a sta-rite pump with a SQ1152 motor. I purchased this motor about 6 years ago from InyoPools. It is now overheatings. It does not seem to be blowing air through the vents. Is there a better version of this motor. I am used to getting at least 10 years from a motor. If there is not a better motor can you provide me with the motor and shaft seal kit part numbers to order?

A     Answered on 9/12/2017 by InyoPools Product Specialist Lennox H.

Hi, Mike L. There is not a better replacement motor available for the SQ1152. You will need the PS201 Pump Seal, or GOKIT38.

?     Asked on 9/10/2017 by Jeff

I have a Pentair WFE-26 pump on which I have successfully replaced the motor with an A.O. Smith Model K48L2PA105A6 (UQC1152, 1.5HP, square flange) in the past. I was happy with A.O. Smith - what 1.5 HP motor and accessories would I need to replace it?

A     Answered on 9/12/2017 by InyoPools Product Specialist Hector F.

If you are needing to replace the same motor, seals, and gaskets then you would need the UQC1152 and the GOKIT32 for a standard chlorine pool or the GOKIT32SALT for a salt water swimming pool. 

?     Asked on 9/2/2017 by jim jaeger

the model # is p6e6f is this the pump and motor. I only need the motor 1.5 hp. What part # do I need to order?

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

Hi, Jim. You can use this SQ1152 (FR 48Y) or the B842 (FR 56Y) motor as a replacement for the P6E6F- pump. You will also need the Max-E-Pro Tune Up Kit - GOKIT79

?     Asked on 8/6/2017 by Kirk

I have a Sta-Rite P6E6F-207L Max-E-Pro pump. I'm looking to replace the motor and want to put in new o-rings and shaft seal. What is the correct motor and seal kit required? It looks like the SQ1152 (not USQ1152) is the correct motor. Is that correct? I can't find the appropriate seal part number

A     Answered on 8/11/2017 by InyoPools Product Specialist Lennox H.

Hi, Kirk. This SQ1152 motor and the Max-E-Pro Tune Up Kit - GOKIT79 are the parts you'll need for the P6E6F-207L pump. 

?     Asked on 7/17/2017 by jIM

Have a Sta-Rite Max-E-Glas II Mod K48M2PA105 Motor P4E6F-152L Motor casing gets too hot to touch. Motor stops after 2 hours run time , cools down and starts again. Assuming need new motor? Recommendation and what ring kit might i need when replacing?

A     Answered on 7/18/2017 by InyoPools Product Specialist Lennox H.

Hi, Jim. This SQ1152 Motor along with the Dura-Glas II Tune Up Kit - GOKIT38 are the parts you'll need to get your pump running smoothly again. 

?     Asked on 7/15/2017 by

what seals ,o rings are included. thank you

A     Answered on 7/16/2017 by InyoPools Product Specialist Lennox H.

Hi. The model of the pump housing is required in order to determine which seals are needed. 

?     Asked on 6/29/2017 by David

I have a new K48M2PA104A2 can this be wired to 110v ?

A     Answered on 6/29/2017 by InyoPools Product Specialist Hector F.

This motor is 230 volt only. 

?     Asked on 5/30/2017 by David

I have a max- e-pro model P6E6D-205L a 3/4hp full rate with a triton TR50 and a 12000gl pool. My clean operating pressure is 10psi I have 70+ feet of head. I'm looking to just replace the motor and not the entire pump housing. Shold I go with a 1 1/2hp full rate AO smith? The current motor hp just doesn't seem to keep the pool clean.

A     Answered on 6/8/2017 by InyoPools Product Specialist Patrick P.

Hi David, I'm thinking the 1.5 HP may be too powerful for your filter. My suggestion would be the SQ1102 1 HP Full Rate Replacement Motor along with the Max E Pro Seal Kit and you will need to replace your 3/4 HP Impeller with this 1 HP Max E Pro Impeller.

?     Asked on 5/13/2017 by Vincent Sossong

Hi I see two different answers for replacement for p6ea6f-206l. Usq1152 and USC 1152. Which one is correct? What's the difference? Thank you

A     Answered on 5/14/2017 by InyoPools Product Specialist Lennox H.

Hi, Vincent. The USQ1152 is a standard motor and the UQC1152 is an energy efficient motor. Either motor can be used as a replacement for the P6EA6F-206L model pump along with the Sta-Rite Max-E-Pro Tune Up Kit - GOKIT79.

?     Asked on 5/10/2017 by Jim

When trying to start the pump the motor just hums. I have been able to get the motor to start twice. This makes me believe that the capacitor is bad. Does this motor have 2 capacitors? I thought the cylinder on top of the motor was it. I also see a small black battery like cylinder on the back of the motor under the cover plate, so I'm not sure.

A     Answered on 5/12/2017 by InyoPools Product Specialist Lennox H.

Hi, Jim. This motor has both a Start Capacitor - 610807-011 and a Run Capacitor - 17586320.

?     Asked on 4/24/2017 by Pat

Hello, The motor went out on my in ground pool, part of the label on the motor is peeled of but the motor says century SQ1152 15 yrs. old, also says 1 H.P. square flange, so why when I put in SQ1152 online it says 1.5 H.P. Pool is 17,000 gallon with a 6 seat under waterfall jump off waterfall. Is the 1 H.P strong enough? Thank You, Pat

A     Answered on 4/25/2017 by InyoPools Product Specialist Patrick P.

Hi Pat, Could you take photo of your motor label as well as a wide shot showing your complete pump, and email us these photos to upload@inyopools.com this will allow us to make the proper motor replacement suggestion.

?     Asked on 2/9/2017 by R Bruce

This looks like the replacement for my AO Smith Model K48M2PA105C4. What other parts am I likely to need to replace to have the replacement function the best? The impeller is the big round part attached to the flange end, correct? Is it typical to replace them both at the same time. What indicates whether it's fine or needs to be replaced. Also what is the shaft seal I see mentioned that also needs to be replaced?

A     Answered on 2/10/2017 by InyoPools Product Specialist Lennox H.

Hi, R Bruce. When replacing the motor we typically recommend replacing the pump shaft seal along with the gaskets and or o-rings. You would replace the impeller if it's damaged or worn. In order to locate these parts, we will need the make and model of the pump housing. If you're unable to locate the pump info you can email us photos of the housing to upload@inyopools.com.

?     Asked on 2/8/2017 by Ken

I have a sta-rite Sta-rite P6EA6F-206L pool filter pump with a frozen motor and would like to be sure that this is the correct replacement. Please advise. Thanks!

A     Answered on 2/8/2017 by InyoPools Product Specialist Scott W.

The correct replacement motor is part number USQ1152 and the shaft seal you need to complete your motor install is part number 5057-30.

?     Asked on 1/16/2017 by

I have an A.O. Smith (K48M2N110) pump that has gone faulty in my house. Please suggest if you have this pump in stock. Also do I need to order anything else with it in order to successfully complete the install.

A     Answered on 1/16/2017 by InyoPools Product Specialist Adam Y.

Good afternoon, You are looking for a A.O. Smith Round Flange 1 1/2 HP Full Rate Motor (C1101, ST1152) You will also need a shaft seal and some orings. I will need to know what pump this motor is going on to let know which gokit to purchase

?     Asked on 1/11/2017 by Larry

i have the Sta-rite Max-e-pro P6E6F-207L 1.5hp and it is excessively noisy. Everything works fine the 6 hours i have it running daily, and wanted to know best way to remedy this without having to replace. If not possible to fix, what motor and parts would I need to repair.

A     Answered on 1/11/2017 by InyoPools Product Specialist Scott W.

You can either replace the bearings on the motor so if the motor you have is part number SQ1152 the bearings you need to replace are part numbers 5270-31 and 5270-32. If you are not able to complete a repair like that, you will have to replace the motor and shaft seal which is part number 5057-30.

?     Asked on 10/22/2016 by Steven Bodinet

Is this motor as energy efficient as the 2842

A     Answered on 10/24/2016 by InyoPools Product Specialist Stacey M.

Hello Steven, If you are looking for Energy Efficient I would go with the 2842. Your sq1152 is running 10.4 amps instead of the 9.6-8.8 from the 2842.

?     Asked on 10/20/2016 by Ron

Is this a two speed motor?

A     Answered on 10/20/2016 by InyoPools Product Specialist Scott W.

That is a single speed motor. The dual speed equivalent is part number B983.

?     Asked on 10/20/2016 by Ron

I have a 7-K56AA23A04-05 motor that is making a grinding noise. I guess I nee to replace it. What motor should I buy and what kits? Is it better to buy the pump /mptor combination?

A     Answered on 10/20/2016 by InyoPools Product Specialist Scott W.

The SQ1152 would be the replacement motor that you need. As for the seal kit, I will need to know the model of your pump for that. If you are not sure of the model you can attach a picture and I will identify it for you.

?     Asked on 10/13/2016 by Dan M

My motor is becoming sluggish upon start up. I noticed on the Web the Large capacitor (20Microfard) on the outside of the motor is a run capacitor. Is this correct? If so, what do I need for the start capacitor?

A     Answered on 10/14/2016 by InyoPools Product Specialist Lennox H.

Hi, Dan M. Yes, the capacitor located on the top of the motor is the Run Capacitor 20MFD 370V (17586320) and the capacitor located under the back cover is the Start Capacitor 36-43MFD, 220-250V (610807-011).

?     Asked on 10/9/2016 by Douglas Veazey

What are the wiring instructions?

A     Answered on 10/12/2016 by InyoPools Product Specialist Megan C.

The wiring diagram should be on the motor. You may use our How To Wire A Pool Pump as a guide, click here to view.

?     Asked on 9/1/2016 by Sal

I opened the back to hold the shaft to install an impeller. Unfortunately a spring fell out. Can I find a picture of how the items in the back, e.g. relay, capacitors are arranged? I do electrical work all the time but not motors

A     Answered on 9/1/2016 by InyoPools Product Specialist Scott W.

Here is a picture of what the back of the motor should look like. The picture will be looking for is going to be under 'more views' under the motor picture.

?     Asked on 8/11/2016 by J

What are the bearing replacement part numbers for this pump? Thanks J

A     Answered on 8/12/2016 by InyoPools Product Specialist Scott W.

The bearings to that motor is part number 5270-31.

?     Asked on 8/4/2016 by Frank Squadrito

I have a 30 year old Anthony Pool Model VA-38, having trouble with the motor pump, question is your SQ1152 the correct replacement?

A     Answered on 8/5/2016 by InyoPools Product Specialist Scott W.

Are you sure the the VA-38 is the model of your pump and not your filter. If you have an Anthony Centrifugal pump then yes the SQ1152 would be the correct replacement motor, but just making sure that we're talking about the same thing.

?     Asked on 7/28/2016 by Amy

Can I just replace the capacitor for this motor? If so, what capacitor does it take?

A     Answered on 7/28/2016 by InyoPools Product Specialist Joe S.

The Capacitor,you would need is the Run  20-370 (rd-20-370) our PART # 5270-07

?     Asked on 6/23/2016 by JON

I have this motor (k48m2pa105c4) which is working ok but I wanted to replace it with a variable speed model. Is there such a replacement? the motor is a 1.5 HP with a SF of 1.47. Its on a Sta Rite p4e6f-183l pump. If a VS motor is not available, could you suggest a suitable Var. Speed pump? Thanks

A     Answered on 6/30/2016 by InyoPools Product Specialist Lennox H.

Hi Jon, The ECM27SQU VS Motor will replace your current single speed motor. I will also recommend getting the Sta-Rite Max-E-Glas II/DuraGlas II Tune Up Kit (GOKIT38).

?     Asked on 6/12/2016 by Dennis West

I have a Starite Max-E-Glas ll 2 HP motor, Mod. K48N2PA105. Will the 1 1/2 Hp K48MPA105 replacement motor fit ? This motor only runs the water fall and it seems to be overkill with 2HP. I would think a 1 HP would even work if you have one thats compatible. Thank You

A     Answered on 6/14/2016 by InyoPools Product Specialist Patrick P.

Hi Dennis you will need the SQ1202 2HP Motor. if you replace your motor with this 1.5 HP motor then this motor will fail quickly since it will be trying to output 2 HP worth of water because it has a 2 HP impeller. You could go down in size to this motor but you will also need to reduce your impeller size to this 1.5 HP Max-E-Glas II Impeller.

?     Asked on 6/1/2016 by steve

Hi, looking for just the replacement motor for my sta-rite pump P6EA6F-206L. will this motor work? I can seem to find the part number for the motor only

A     Answered on 6/1/2016 by InyoPools Product Specialist Lennox H.

Hi Steve, The UQC1152 is the correct motor needed for the P6EA6F-206L pump, I would also recommend getting the Max-E-Pro Tune Up Kit.

?     Asked on 5/23/2016 by dave

I have a starite pump, cant make out model # looks like HPRA??-148 i have mottor SQ1152. I need tune up kit, leaking where 6 bolts attach to the motor.

A     Answered on 5/23/2016 by InyoPools Product Specialist Patrick P.

Hi Dave, Can you double check your part # it should be a 2PRA, 4PRA or 6PRA. If you have the 2PRA you have the Sta-Rite DuraGlas and you will need the Dura Glas Tune Up Kit. If you have the 4PRA you have the Sta-Rite DuraGlas II and you will need the Dura Glas II Tune Up Kit. If you have the 6PRA you have the Sta-Rite Max-E-Pro and you will need the Max-E-Pro Tune Up Kit.

?     Asked on 5/23/2016 by Deryk Hossner

Good morning, I am looking for a replacement motor for my Centurion motor that died on me. Part number is 7-168345-25. It says it's a 1 HP with 1.65 SF. Frame Y56Y, Type CX Form KJM Code H Encl DP. It goes with a Challenger CF11-N1-1F 1-11-F99 / 34-2234 Self Priming Pump that I"d like to get a seal kit for. Salt water pool.

A     Answered on 5/23/2016 by InyoPools Product Specialist Patrick P.

Hi Deryk, For your pump you would require the the B2848 Motor along with the Challenger Tune Up Kit.

?     Asked on 5/19/2016 by Big H

I have a Stay-Rite Max-E-Pro Pump and I've found the right replacement motor, but I'm not sure about the motor shaft seal. I do have a saltwater pool.

A     Answered on 5/19/2016 by InyoPools Product Specialist Hector F.

The salt water shaft seal 35-423-1096 is what you would use.

?     Asked on 5/12/2016 by emma hernandez-saldana

Hi. The motor model # i'm in need of is K48M2PA105 CW with a 1 1/2, will this one work?

A     Answered on 5/13/2016 by InyoPools Product Specialist Alan M.

Hello Emma, The SQ1152 is the correct replacement motor for the model K48M2PA105 you provided. We will also recommend that you change out the motor shaft seal when you change out the motor. You will need to identify the manufacturer make and model of your pump housing, the front half the motor connects to, in order to determine the correct seal replacement.

?     Asked on 8/12/2015 by Sergio

Hello, What is the price for O ring & the Shaft ring for this motor A.O. Smith 1 1/2 H.P Square Flange Full Rate Motor (SQ1152)? Send me the part # too. Is this is the replacement motor for Sta Rite Max-E-Glas 11? What is your return policy, in case? Thank you, Sergio.

A     Answered on 8/14/2015 by InyoPools Product Specialist Lennox H.

Hi Sergio, The A.O. Smith 1 1/2 H.P Square Flange Full Rate Motor (SQ1152) can be used with the Sta-Rite Max-E-Glas II Pump. You would also need to confirm if this is the actual motor that is sized to the impeller.You can find the replacement o-rings and shaft seal via the Sta-Rite Dura-Glas II and Max-E-Glas II Parts.

?     Asked on 5/31/2015 by Tony

do i need to change the O-Ring and shaft seal if we replace the Pump Motor?

A     Answered on 5/31/2015 by InyoPools Product Specialist Patrick P.

Hi Tony we would definitely suggest replacing the shaft seal and o-rings when replacing your motor. This will ensure you have no leaking after the install.

?     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.


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