Century 1.0 HP Round Flange 56J Full Rate EE Motor - CT1102



Part # CT1102

By Century Motors

  5 Average  



Part # CT1102

Warranty 1 Year

Alternate Part #'s 17037, 186916, 19148, 327P563, 3K114, 52010, 6K877, 89148, 91713, B654, B724, C1488, C48L2DB11A4, CT1012 AOS (MISPRINT), CT1102, CT210CE, EB654, ECT1102, JD10FL1E, K48K2N103, K48L2N100A1, K48L2N104, K48L2N105, K48L2N105A1, MFK-19148, SP1610Z1BE, SP1610Z1BEE, SPX1610Z1BEE, 35-126-3060, AOS-60-5211, AOSCT1102

Product Description

Voltage 115/230, Max Amps 115V = 13.6 230V = 6.8, Single Speed, Round Flange, RPM = 3450, Threaded Shaft, Frame = 56J Used on the following FULL RATE ENERGY EFFICIENT models: Hayward Super II Energy Efficient, Hayward Northstar Full Rate and Jacuzzi Magnum Full Rate pumps.

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 CT1102 Replacement Pool Motor
1 HP
3450 RPM
115/230 V
13.6/6.8 amp
Service Factor:
Total HP:
1.4 HP
Stock #:
Overload Protector:
Dimension Letter:
12 - 1/8 in.
Commonly Used On:
Hayward Super II , Hayward Northstar Full Rate and Jacuzzi Magnum
Energy Efficient:
ULTRA Energy Efficient

?     Asked on 1/25/2023by Ron Billings

Will this motor fit on a handy stealth. I have a ct1102 on there right now

A  Answered on 1/25/2023 by InyoPools Product Specialist Rich N.

Yes - but no.  The California Title 20 regulations will not allow us to ship you an exact replacement single-speed CT1102, but the variable-speed EVC165 motor will be perfect and will be compliant.  We recommend replacing the shaft seal when replacing the motor, but there were 2 different seals used on that pump.  Check our guide on How To Select the Shaft Seal for a Jandy Stealth so you get the correct one. 

?     Asked on 11/3/2022by Scott

Hi - I need to replace an older Hayward (AO Smith) pool pump motor. Will this Century work as a replacement? I uploaded a picture of the existing pump. Thank you! Existing model number: K48L2N104


A  Answered on 11/3/2022 by InyoPools Product Specialist Craig C.

Hello Scott.  The Century 1.0 HP Round Flange 56J Full Rate EE Motor - CT1102 is a compatible replacement motor for the A O Smith motor K48L2N104.  

?     Asked on 9/25/2019by Jim

Is this motor an enegry effecient repacement for a ST1102? Also, what Go Kit will I need? I've included photos because I'm not sure my pump's model other than being manufactured by Hayward. Contrary to how the equipment may appear, it's not a salt water pool.


A  Answered on 9/25/2019 by InyoPools Product Specialist Hector F.

Yes, this is an energy-efficient single speed option for the ST1102 and the correct seal kit would be the GOKIT3

?     Asked on 6/21/2019by Robert Pulido

Trying to replace A K48L2N104 Motor, This returned as the go to motor from search but the specs are slightly different than what is listed on the motor. Will this be suffice and if not what would I be looking for instead? Specs as listed on motor: HP: 1 Amps: 14.6/7.3 Volts: 115/230 SF: 1.5 FR: 56J RPM: 3450 Thank you.

A  Answered on 6/21/2019 by InyoPools Product Specialist Hector F.

Sometimes over the years the specs slightly change but this is the replacement motor for the model K48L2N104 motor. 

?     Asked on 5/1/2019by Phil

I am replacing a Haywood Super II motor for a SP3010EEAZ pump. The motor is AO Smith K48L2N104 with 56J frame. Do I need model CT1102? Chlorination is provided by a salt converter. Is your GOKIT2SALT the correct kit for seal replacement? Thank you

A  Answered on 5/2/2019 by InyoPools Product Specialist Lennox H.

Hi, Phil. This CT1102 and GOKIT2SALT are the correct parts for your model pump. 

?     Asked on 1/10/2019by Inyo Visitor

Do you offer a military discount by chance?

A  Answered on 1/11/2019 by InyoPools Product Specialist Michelle B.

Hello, Unfortunately, we do not. However, if you like our Facebook page, there is a $10 off coupon there.

?     Asked on 1/2/2019by Norm

Is this a 2 speed motor?

A  Answered on 1/2/2019 by InyoPools Product Specialist Kevin G.

No, this is a single speed unit. 

?     Asked on 10/11/2018by Mary

I need to replace the pump not just the motor. what do you recommend. Currently A.O Smith model # K48L2N104, HP 1, KW .75, HZ 60, SF 1.5, RPM 3450, serial SH08, 2" pipe on current pump

A  Answered on 10/12/2018 by InyoPools Product Specialist Hector F.

Based on those specifications I would at least consider a PL2602 or a PL2605 variable speed option. Both come with the unions. 

?     Asked on 7/24/2018by David Parker


A  Answered on 7/24/2018 by InyoPools Product Specialist Hector F.

You can use the model ECM16CU which would match your current total horsepower or you can use the model ECM27CU which will give you extra strength if you will need it. 

?     Asked on 5/1/2018by Laura

Can you replace the SP1607Z1M with this model?

A  Answered on 5/1/2018 by InyoPools Product Specialist Hector F.

No, this model is a stronger rated motor which could cause pump or system issues. 

?     Asked on 4/6/2018by Craig W.

Based on the two model numbers (K48L2N104 and SP1610Z1BE) listed on my current motor, I see that this (CT1102) is the replacement. It was previously stated here that Total Horse Power (HP x SF) of the new motor should be equal to or greater than the old motor. My old 1HP motor has an SF of 1.5 for a THP of 1.5. The new replacement 1HP motor has a SF of 1.4 for a THP of 1.4, which is less than the old motor. Is it ok to be close or will this affect the life of the new motor?

A  Answered on 4/6/2018 by InyoPools Product Specialist Kevin G.

Hello, being within .1 of an HP will not affect the performance of the pump. 

?     Asked on 9/11/2017by Rene Emilio

Hello there, I am replacing my pool motor A.O.Smith K48L2N104 Can you please tell me which motor I can purchase from you to fit my needs? Thank you

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

Hi, Rene Emilio. This CT1102 motor is the direct replacement for model # K48L2N104. 

?     Asked on 7/11/2017by Jim Wagner

My pump motor is starting hard and slow and pops the breaker on the main panel. Does this motor have a starter or does the entire motor need to be replaced?

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

Hi, Jim. Since the motor is tripping the breaker I would recommend replacing the entire motor. 

?     Asked on 4/11/2017by stu in dallas

i have a new ct1102 to replace my 4 year old ct1102 but the seal does not seem to be seating... water just runs out on the motor side (at restt) is the shaft of thenewer models longer than the old? is there a longer (spring side) bearing to accountfor this?

A  Answered on 4/11/2017 by InyoPools Product Specialist Lennox H.

Hi, Stu. The shaft is definitely not the problem, either the pump seal is old, not installed correctly or is the wrong size. You can follow the steps in our How To: Replace a Pump Shaft Seal for installation instructions.

?     Asked on 2/20/2017by Inyo Visitor

In answer to my recent question on replacing a 1.5 hp motor you recommended the UQC1152. On the header of your answer email it says "Energy Efficient AO Smith Round Flange 1 HP Full rate Motor". Is the UQC1152 1 or 1.5 hp?

A  Answered on 2/20/2017 by InyoPools Product Specialist Scott W.

The UQC1152 is a 1.5HP motor, square flange which is what you are needing, not a round flange motor.

?     Asked on 2/20/2017by John Hill

I'm replacing an AO Smith B854, 1.5 hp motor, Part#0-177216-24 motor, frame Y56Y What energy efficient single speed model would you recommend as a replacement?

A  Answered on 2/20/2017 by InyoPools Product Specialist Scott W.

The energy efficient replacement is part number UQC1152.

?     Asked on 2/11/2017by Samir Saaty

What is the running temperature for the CT1102 motor? It seems t quite worm !! Thanks.

A  Answered on 2/13/2017 by InyoPools Product Specialist Lennox H.

Hi, Samir. The CT1102 motor can operate up to 50°C or 122°F.

?     Asked on 2/8/2017by Samir Saaty

Wiring instructions for CT1102 moor.

A  Answered on 2/8/2017 by InyoPools Product Specialist Lennox H.

Hi, Samir. A wiring diagram is displayed on the motor, or you can view our video on How To: Wire a Pool Pump Motor.

?     Asked on 9/24/2016by gary

water coming thru seep hole at when running, when shut doff it loses prime . on restart and reprime get a lot of bubbles and some dirt

A  Answered on 9/25/2016 by InyoPools Product Specialist Stacey M.

Hello, you might have an air leak or possible crack in your pvc, please check out our "how to" guides under problems with priming pump. http://www.inyopools.com/HowToPage/how_to_determine_why_a_pool_pump_won_t_prime.aspx

?     Asked on 8/7/2016by laura

My motor is humming before tripping breaker. I have a model k48l2n104 motor which this seems to be the placement but I was told to replace the capacitor first to see if that is the problem. Does my model have only one or both capacitors? Mine is a silver container and doesn't look like either that I saw.

A  Answered on 8/19/2016 by InyoPools Product Specialist Stacey M.

Hello Laura, you have 2 capacitors, 628318-306 is your Run Capacitor and 610807-001 is your Start Capacitor for the CT1102 motor

?     Asked on 6/24/2016by Wayne Parkinson

Is the capacitor under the metal cover on top of the motor the start capacitor?

A  Answered on 6/26/2016 by InyoPools Product Specialist Alex V.

Wayne, It is likely a start capacitor.

?     Asked on 6/3/2016by Inyo Visitor

wondering what the warranty is on this product?

A  Answered on 6/3/2016 by InyoPools Product Specialist Scott W.

It's a one year warranty through AO Smith.

?     Asked on 4/25/2016by peter

I have a k48l2n104, just wanted to make sure if this is the correct replacement? thanks

A  Answered on 4/26/2016 by InyoPools Product Specialist Hector F.

Yes this is the correct replacement motor.

?     Asked on 4/24/2016by Anthony Vicich

This seems to be the replacement for my old k48L2N104. However this is a four bolt set up and my old one has six. Is this a problem?

A  Answered on 4/25/2016 by InyoPools Product Specialist Hector F.

This is the correct motor replacement. The six bolts are from the plastic mounting seal plate that the motor is bolted to and not the motor itself.

?     Asked on 3/11/2016by Andy

I need to replace motor k48k2pa105c1. It is a 3/4hp motor but I am interested in upgrading to a 1hp motor. Is this motor suitable? Thanks. Andy.

A  Answered on 3/15/2016 by InyoPools Product Specialist Lennox H.

Hi Andy, The A.O. Smith 1 H.P Square Flange EE Up Rate Motor (UQC1102) would be the suitable replacement motor.

?     Asked on 7/27/2015by Jon

is this the newer version of Model K 48L2N104 1 HP motor by A. O. Smith?

A  Answered on 7/27/2015 by InyoPools Product Specialist Andy O.

Hello Jon- The CT 1102 Energy Efficient A.O. Smith Round Flange 1 HP Full Rate Motor would be the model motor that replaced your k48l2n104.

?     Asked on 2/11/2015by hector mendoza

Can the SPX1610Z1BE be replaced by model number CT1102?

A  Answered on 2/12/2015 by InyoPools Product Specialist Robert M.

Hello Hector - The CT1102 can replace the Hayward SPX1610Z1BE.

?     Asked on 1/19/2012by 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 1/12/2012by 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 1/12/2012by 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 1/11/2012by 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

replace my pool motor

Written on 3/16/2018 by Guest

we shut the power to the system, we then pulled the good parts cleaned them and lubed them, then replaced the new motor, then restored power, started the motor and it purred like a kitten

Were these instructions helpful? 


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