A.O. Smith 1 HP Square Flange 48Y Full Rate EE Motor - QC1102



Part # QC1102

By Century Motors

  4.56 Average  



Part # QC1102

Warranty 1 Year

Dimensions 13.5" L x 7" W x 7" D

Alternate Part #'s 10-168887-06, 10-168887-86, 16359, 165888, 168887, 5KC38SN2510CX, 5KCR39UN6148X, 7-168887-06, 8-168887-06, AE100EH, AE100EHL, AE100FL, AE100FLL, B841, B864, B864SE, C1448, C1500, EB841, EQC1102, K48L2P100, K48L2P101, K48L2P101A1, K48L2PA101, K48L2PA101A1, K48L2PA105, K48L2PA105A6, K48L2PA105C3, K48L2PM100, K48L2PU100, QC1102, SQ210E, SQD10FL1E

Product Description

** PLEASE NOTE: A.O. Smith has discontinued the B864SE 1.5 HP Up Rate motor. They recommend as a replacement QC1102 1 HP Full Rate motor. The effective horse power of these two motors is the same: B864SE 1.5 HP x 1.10 SF (service factor) = 1.65 effective HP; QC1102 1 HP x 1.65 SF = 1.65 effective HP. Inyo Pools is shipping the QC1102 as a replacement.

A.O. Smith replacement motors for Pentair WhisperFlo, energy efficient, up rated pumps. Specifications: HP = 1, RPM = 3450, Voltage = 115/208-230, Amps = 16.0/7.8.0, Service Factor = 1.65, Frame = 48Y, Shaft = Threaded.

Note: NOT California Title 20 Compliant. 

California Title 20 Compliant Options:

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
1 HP QC1102 Replacement Pool Motor
1 HP
3450 RPM
115/208 - 230 V
16/8 amp
Service Factor:
Total HP:
1.65 HP
Stock #:
Overload Protector:
Dimension Letter:
11 - 7/8 in.
Commonly Used On:
Pentair WhisperFlo
Energy Efficient:
Energy Efficient
Pump Model:
WF-24 & CFII-NI-1A
Whisperflo & Challenger

?     Asked on 7/28/2019 by Charles Bihler

Hi we are ordering a pool motor ao smith 1 hp glance 487 qc1102 do we need to order anything else for the installation .....ie like a sleeve

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

Hi, Charles. You will need to replace the pump shaft seal. To locate the correct replacement, you will need to provide us with the pump housing pump model.

?     Asked on 6/12/2019 by

is this the right motor?


A  Answered on 6/12/2019 by InyoPools Product Specialist Lennox H.

Hi. Yes, this is the correct replacement. 

?     Asked on 6/3/2019 by JOHN JANUS

can you ship A.O. Smith 1 HP Square Flange 48Y Full Rate EE Motor - QC1102 to california?

A  Answered on 6/3/2019 by InyoPools Product Specialist Patrick P.

Unfortunately, we cannot, you would need this 1.65 HP Variable Speed Replacement Motor.

?     Asked on 3/19/2019 by khoa

what is the replacement bearings for this motor?

A  Answered on 3/19/2019 by InyoPools Product Specialist Lennox H.

Hi, Khoa. The 62032RS Bearing are the correct size for the SE and OSE for the QC1102 motor. 

?     Asked on 10/20/2018 by Jeff Dokousian

A.O. Smith pump Mod. K48L2PA101A1 finally died. I am looking to upgrade to one of the variable speed motors. Can you tell me what pump and seal kit (If needed) would be ideal for me please?


A  Answered on 10/25/2018 by InyoPools Product Specialist Hector F.

The VS motor replacement that you would need is the model ECM16SQU. And for the seal kit, you will need to provide us with the model name or number of the front pump housing that the motor bolts to so we can cross-reference those seals. If you cannot locate that information then you can always send us an image of that to upload@inyopools.com so we can assist. 

?     Asked on 8/13/2018 by Keith DeLong

This looks like the replacement for my K48L2PA105C3 in my sta-rite max-e-pro. Is there a variable speed motor that matches this one that I could upgrade to? what seal kit do I need?

A  Answered on 8/17/2018 by InyoPools Product Specialist Lennox H.

Hi, Keith. You can use the ECM16SQU - 1.65 HP Variable Speed Square Flange Motor and the Sta-Rite Max-E-Pro Tune Up Kit - GOKIT79 are the parts you'll need to upgrade your current pump. 

?     Asked on 5/29/2018 by

Is this compatible with the Sta-Rite P6EA6G-207L?

A  Answered on 5/29/2018 by InyoPools Product Specialist Lennox H.

Hi. That pump model requires the USQ1202. You can convert that pump to use this QC1102 which will require changing the impeller and diffuser along with the seals. 

?     Asked on 7/10/2017 by

I have an A O Smith motor K48L-2PA105. What are the replacement bearings for this motor and are they the same for (SE) & (OSE)?

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

Hi. The K48L2PA105 motor uses the 203 Bearing on the SE and OSE

?     Asked on 7/8/2017 by

What is the energy usage difference between the older qc1102 and the ee b864se?

A  Answered on 7/12/2017 by InyoPools Product Specialist Lennox H.

Hi. The Century B864SE Motor has been replaced by the Century QC1102 motor. The B864SE used 7.8-7.4/14.8 amps at 208-230/115 volts and the QC1102 motor uses 8.0/16.0 amp at 208-230/115 volts. 

?     Asked on 10/7/2016 by

What the difference between this model and "1 HP Motor EE - Full Rate (B2841, B2841V1)"? I have a Pentair Whisperflo WF-26 / 011773 / 1.5 HP / 1.65 S.F. HP. Which one should I buy? Thnx,

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

Hi. The difference between the QC1102 and the B2841 motors are the Frame size. The QC1102 has a 48Y frame which is smaller than the B2841 which has a 56Y frame. Either motor is compatible with  Pentair Whisperflo WF-26. The Pentair Whisperflo Tune Up Kit GOKIT32 or GOKIT32SALT is the correct kit for that pump.

?     Asked on 9/3/2016 by John

Tune Up Kit Starite P4E & P4EA Max-E-Glas II / DuraGlas II GOKIT38 Is this the correct tune up kit for the 1.0 HP Full Rate EE Motor (B864SE) QC1102

A  Answered on 9/16/2016 by InyoPools Product Specialist Lennox H.

Hi John, The GOKIT38 is the correct kit if you have a Sta-Rite Max-E-Glas II & DuraGlas II pump. The motors info does not determine which kit you needed.

?     Asked on 6/6/2016 by Vee

Intermittently working k48l2pa105, is there a capacitor to swap or just move forward with this motor for replacement?

A  Answered on 6/7/2016 by InyoPools Product Specialist Patrick P.

Hi Vee, Here is the Run Capacitor for your k48l2pa105 Motor and here is the Start Capacitor for your k48l2pa105 Motor

?     Asked on 5/29/2016 by Cory

I'm replacing my 20year old K48L2PA105 motor. Does this replacement come with a new shaft seal? If not, what is the part number. Thank you

A  Answered on 5/30/2016 by InyoPools Product Specialist Alex V.

Cory, The motor does not come with a shaft seal. The seal is dependent on the make and model of the pump housing not the motor.

?     Asked on 5/10/2016 by Rog

Water got into the motor and rust formed on the inside of end cap of the motor,right where the motor shaft come through to impeller. Do you know where I can get new end cap? Bearing and everything else is OK! Thank you R

A  Answered on 5/13/2016 by InyoPools Product Specialist Lennox H.

Hi Rog, The Shaft End Bell (SAW-49) can be used with the QC1102 motor.

?     Asked on 3/7/2016 by JOANNE WEBSTER


A  Answered on 3/7/2016 by InyoPools Product Specialist Andy O.

Hello Joanne, The QC1102 1.0 HP Full Rate EE Motor (B864SE) would be the replacement for your K48L2PA105/ AE100FLL motor. Both of those numbers can be found in the Alternate Part#'s section of the product details.

?     Asked on 4/26/2015 by Fred

Is this a new pump or rebuilt?

A  Answered on 4/26/2015 by InyoPools Product Specialist Patrick P.

Hi Fred, This is a brand new motor with the full 1 year manufacture warranty.

?     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

Screwdriver, Pliers, Socket Set, Wrench Set

My motor pump for my pool need it to be replaced

Written on 5/7/2018 by Guest

My pool pump was making a lot of noise and finally stop working time to replace I searched a lot places they wanted a lot money for it I find InyoPools.com and they where very helpful and they have the pump I was looking for also it’s my first time replacing my pump they send me a link video on how to replace the pool pump it was very explanatory and easy step by step video how ever I didn’t know what I did wrong my pump started to dripp water I call and they helped me by letting me know what I probably missed by letting them know what I did they where able to tell me that I needed to check for a sealer gasket as soon as I finish doing that I will post the outcome of my replacement of the pump so far InyooPools is been very helpful thanks InyooPoolsfor the help

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Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Nut Drivers, Socket Set

Bearing down in old motor, heated until fan melted. Not rebuildable

Written on 10/6/2017 by Guest

This was a direct replacement motor for my Sta-Rite pump. Had no problems reinstalling, Ran like a champ and sure was quiet. Quick delivery too...

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Review Summary

 (Average 4.56  out of 5 stars)
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