Century 1.0 HP Full Rate NorthStar Replacement Motor - SN1102



Part # SN1102

By Century Motors

  4.86 Average  



Part # SN1102

Warranty 1 Year

Alternate Part #'s 187630, 193221, 193684, ESN1102, SN1102, SP1610Z1BNS, SP1610Z1BNSC, SPX1610Z1BNS

Product Description

Full rated 1 HP motor; 3450 rpm, 208-230/115; 8.5-7.8/15.6 full load amps; 1.85 service factor; 56J frame

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 SN1102 & SP1610Z1BNSC Replacement Pool Motor
1 HP
3450 RPM
208 - 230/115 V
8.5 - 7.8/15.6 amp
Service Factor:
Total HP:
1.85 HP
Stock #:
SN1102 or SP1310Z1BNSC
Dimension Letter:
13.35 in.
Commonly Used On:
Hayward Northstar Pump
Pump Model:
NOT California Title 20 Compliant

?     Asked on 9/28/2019 by Minor B McDaniel

my motor is a hayward model sp4010stap/ p/n spx1610z1bnspr. do you have a replacement/ (1 hp)

A  Answered on 10/2/2019 by InyoPools Product Specialist Michelle B.

Hello, Can you please provide a picture of the motor label so I can find the correct replacement for you?

?     Asked on 9/5/2019 by SUZANNE BONELLI


A  Answered on 9/12/2019 by InyoPools Product Specialist Hector F.

Your replacement motor is actually the model USN1102

?     Asked on 5/30/2019 by Andrew

Will this motor replace my existing Hayward Northstar Pool Pump. Model Number SP1610Z1BNSC. Please see photo.


A  Answered on 5/30/2019 by InyoPools Product Specialist Lennox H.

Hi, Andrew. Yes, this SN1102 motor is the correct replacement. 

?     Asked on 11/29/2018 by

Do I need to get the pump seal separately?

A  Answered on 11/30/2018 by InyoPools Product Specialist Hector F.

Yes, all pump seals and gaskets are sold separately depending on the specific model of the pump housing that the motor bolts to. 

?     Asked on 9/4/2018 by Paul

Is this a new motor or is it a rebuilt one?

A  Answered on 9/4/2018 by InyoPools Product Specialist Hector F.

This is a brand new pool motor. 

?     Asked on 6/24/2018 by Vanessa

I have a hayward de3620 filter with a motor that reads: Century centurion AO smith CAT: SN1102 Part: 7-193684-02 Hp: 1.0 Can you tell me if this is the correct replacement motor? Also can you tell me what the replacement start capacitor would be for this if I wanted to start by replacing that part first? Thank you

A  Answered on 6/25/2018 by InyoPools Product Specialist Kevin G.

Hello, yes this would be the correct replacement motor for you. In regards to the capacitor, that would be part number 5270-05.

?     Asked on 6/24/2018 by Vanessa

I have a hayward Filter DE3620 for inground and a pump that reads: century centurian AO Smith CAT: SN1102 Part: 7-193684-02 Hp: 1.0 Is this the correct motor replacement? Also could you please tell me which start capacitor I would need if I wanted to try to replace that first? Thank you

A  Answered on 6/25/2018 by InyoPools Product Specialist Hector F.

Yes, this is the correct replacement motor and the capacitor part number is part number 5270-05

?     Asked on 6/11/2017 by AaronS

I have a model #SP4007X10. Is this the correct replacement motor? What is the tune up kit for this also?

A  Answered on 6/11/2017 by InyoPools Product Specialist Patrick P.

For the SP4007X10 Northstar you will require the USN1102 1 HP Up Rate Replacement Motor To be able to suggest the proper seal kit we would need to approximately what year your pump was manufactured.

?     Asked on 5/1/2017 by JERRY

Would your pool motor hum if the start capacitor or start switch is bad? If so how do you test the capacitor or switch?

A  Answered on 5/2/2017 by InyoPools Product Specialist Stacey M.

Hello Jerry, we have a lot of videos on replacing the capacitor, but none of testing capacitors.  Humming from the motor is because the capacitor has gone bad. If you would like to see How To: Replace Your Pool Pump's Capacitor or Poolside Chat Episode 42: Pool Pump Motor Capacitors.

?     Asked on 1/9/2017 by John Crawford

To remove the impeller,does it come off clockwise or counterclockwise

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

Hi, John. To remove the impeller from the motor shaft you will need to rotate it counter clockwise.

?     Asked on 8/28/2016 by Robert Naylor

Hi, I have a Hayward Northstar Pump Assembly for my inground pool. Is the SN1102 the correct replacement motor for this unit. The original AO Smith Century motor says SP1610Z1BNSC on the data plate. Thanks.

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

That would be the correct replacement, but you could also go with part number 5112-052.

?     Asked on 7/31/2016 by Kirk

I replaced the capacitor and rebuilt the pump just 2 months ago and was working better than ever but the motor just started screaming yesterday. I can only guess the it had overheated when I had the initial issues and now the bearings are shot. My plan is to go ahead and replace the motor. Well I need a new tune-up kit or well the one I just installed be fine? Thanks

A  Answered on 8/4/2016 by InyoPools Product Specialist Lennox H.

Hi Kirk, You will not need another tune up kit if it's only 2 months old but I would recommend getting another shaft seal just to be safe.

?     Asked on 3/7/2016 by Brandon

What is the warranty on motor. SN1102

A  Answered on 3/7/2016 by InyoPools Product Specialist Lennox H.

Hi Brandon, This comes with a 1 year manufacture warranty.

?     Asked on 2/1/2016 by

My pump is a Hayward Northstar SP4007X10NS. Is this the correct motor replacement? Also, which go-kit do I need for this pump?

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

Bary- The replacement motor for your model pump is the USN1102 A.O. Smith 1 HP Up Rated North Star Replacement Motor. As for the go-kit we would need to know what year the pump was installed.

?     Asked on 1/18/2012 by Guest

I'm trying to find a replacement motor for my pool pump but my model number doesn't match what you have listed as the model number. My model number begins with a C48 and yours begins with an SP. Please help.

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

What we have listed on our chart pages is the pump model number. The model number you have will just identify the motor. If you look on the plastic housing on the pump there should be a sticker which will have the pump model number. You can usually find this by the discharge port on the pump. Once you locate it you can choose the correct replacement motor. Be certain to change the shaft seal and gaskets as needed. You can use our >How to guide if you need help. 

?     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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