Part # BN40SS

Dimensions 14" L x 6.5" W x 6.5" D

Alternate Part #'s 17527, 177778, 181069, 181484, 181579, 182276, 182688, 182798, 182924, 184518, 186062, 186095, 186097, 186887, 193864, 193865, 5KCR39UN2898X, 5U164, 7-182688-02, 7-184518-02, 7-186095-02, 7-186097-02, 7-186097-40, 8-186062-01, BN40, C1456, SPH20FL1, SPH20FLC

Product Description

BN40 Motor, 2 HP, 230/115v, Single Speed, full load amps 10.0/20.0, 3450 rpm, service factor 1.0, frame 48Y, threaded shaft. Please note that the BN40 motor has an internal capacitor mounted in the back of the motor, not on top as pictured.

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
2 HP BN40 & BN40SS Replacement Pool Motor
2 HP
3450 RPM
230/115 V
10/20 amp
Service Factor:
Total HP:
2 HP
Stock #:
BN40 or BN40SS
Overload Protector:
Dimension Letter:
13.33 in.
60 Hz
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 3/27/2017 by Jake

I have a hayward power flow LX its a hp 3.0 spl. model # sp1580z2. will this work as a replacement

A     Answered on 3/28/2017 by Scott W.

That is fine, but you will want to the correct impeller for the horsepower, part number 5111-07J, and the shaft seal, SP1500KA. You also want to make sure that your system is able to handle a decreased flow rate.

?     Asked on 12/8/2016 by Ramas

Will your motor BN40SS properly replace the failed Pentair WhisperFlow 2HP motor? If so, what additional items do I need to pick up for a successful replacement? Thanks!

A     Answered on 12/9/2016 by Lennox H.

Hi, Ramas. This BN40SS motor is not compatible with the Pentair Whisperflo Pump. Please provide us with the Whisperflo model or part number so that we can locate the correct motor for you.

?     Asked on 10/30/2016 by jan ingar

hi my old pump is an A.O.SMITH bn39 part 7 - 17777-03 1.5 hp 220-240 V can i use this one ? i have one dreamamker spa vith redpump and hotsticker.

A     Answered on 10/31/2016 by Lennox H.

Hi Jan, You can use the BN40SS motor to replace the BN39 motor which is compatible with the DreamMaker Redpump.

?     Asked on 10/12/2016 by Philip

Can the bearing be bad in the motor I have a high pitch squel

A     Answered on 10/12/2016 by Hector F.

This is one of the signs that the bearings are going bad in a motor. To confirm the bearing part numbers for that model motor you would need to touch base with A.O. Smith at (800) 262-6484.

?     Asked on 6/18/2016 by Phil

Impeller bad need to replace 1 HP not 2HP

A     Answered on 6/19/2016 by Patrick P.

Hi Phil, Could you let us know the make and model of your pump as this would help us determine which impeller you need.

?     Asked on 5/21/2016 by Alan

Is a 2 HP pump about right for 24' round above ground pool that is 56 inches deep?

A     Answered on 5/21/2016 by Patrick P.

Hi Alan, You should actually be fine with a 1 HP Pure Pro XL Pump on a 24' round pool or possibly a 1.5 HP.

?     Asked on 2/29/2016 by Bill

Hi.... I will be buying a BN40ss motor to replace a magnetek motor (7-184518-02 ) How do I know which shaft seal to get? It will be used as a spa motor/pump. Thanks

A     Answered on 3/1/2016 by Lennox H.

Hi Bill, We would need the manufacture and model of the pump wet end in order to find out which shaft seal is needed for that pump.

?     Asked on 2/28/2016 by Leo

Information of my jacuzzi pump, Flo master 031221762-1 code 08016 serial #203172-024 FMHP 553022 which pump is the replacement. Also, water exits from side of impeller not top. Thanks, Leo

A     Answered on 3/1/2016 by Lennox H.

Hi Leo, None of the info provide allowed me to cross reference it to a specific Flo-Master Pump. The FMHP pump does have a side discharge but I'm not sure if this motor is the correct one. If you can send us a photo of the motor label I will be able to confirm if this is the correct motor.

?     Asked on 2/27/2016 by Bill

Hi, Is the BN40ss a direct replacement for a Magnetek 7-184518-02 ? Thanks

A     Answered on 2/29/2016 by Lennox H.

Hi Bill, The BN40SS will be the direct replacement for p/n 7-184518-02.

?     Asked on 7/24/2015 by Danny

will a flo master XP2 pump by aqua-flo fit this motor?

A     Answered on 7/24/2015 by Charlie R.

Danny,As far as bolting up to the XP2 pump, yes both frame sizes of motor and pump are a 48Y frame. Because I do not know the horsepower or specs of the actual pump itself, I wouldn't be able to confirm if this motor will run properly with the pump, though.

?     Asked on 7/21/2015 by Gary

will a pn315-1160 wet head fit this motor?

A     Answered on 7/21/2015 by Matt S.

Hello Gary, The 315-1160 is the front volute for a Waterway Hi-Flo pump but it does not identify the HP of your particular wet end. But I can say from the numbers provided, the BN40 will work for the Hi-Flo series.

?     Asked on 6/10/2015 by Dave Rabago

Is the BN40SS a direct replacement for the magnetek 7-181579-02?

A     Answered on 6/10/2015 by Patrick P.

Hi Dave, yes the BN40SS a direct replacement for the magnetek 7-181579-02.

?     Asked on 2/21/2015 by Sue

Hello, we currently have a broken magnetek b124. this model's numbers and frame style match. Can we use this one?

A     Answered on 2/23/2015 by Robert M.

Hello Sue - The BN40SS would not be a compatible replacement. We would recommend going with the B124 motor.

?     Asked on 1/12/2012 by Guest

Why should I purchase a Tune Up Kit?

A     Answered on 1/12/2012 by 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 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 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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