When the time comes to replace your pool pump motor the jumble of numbers and ratings on a motor can be overwhelming. This "How to" will guide you through which information is useful in your replacement pump motor search. We also provide tips on essential parts that should be replaced when installing a new pump motor.
Click Here to Find Your Replacement Pool Pump Motor & Gasket Kit 
Doug Posted: 9/22/2021
What size of starting capacitor do I need for a A.O Smith 1.5 hp pool motor, model number C48L2N134B1? Thanks.Reply
InyoPools Product Specialist Matt S. Posted: 9/22/2021
The correct start capacitor for the C48L2N134B1 is the 610807-002Reply
Saul Posted: 8/15/2021
Hello. Which start capacitor do I need for an A.O. Smith SQ1102 C48L2PA105C4? I'm assuming it's the start capacitor that needs to be replaced because when the power turns on, the motor makes a humming noise for about 5 to 10 seconds before the water starts filling up.Reply
InyoPools Product Specialist Matt S. Posted: 8/17/2021
The SQ1102 (C48L2PA105C4) uses the Start Capacitor 161-193 MFD - BC-161. You may test the capacitor to determine if it is the cause of your motor issue using the steps in this guide - How to Test a Pool Pump CapacitorReply
Jill A Maline Posted: 7/13/2021
I need a new run capacitor for model number USQ1152 C48L2PA105C5. What is the part number of the run capacitor that I need?Reply
InyoPools Product Specialist Matt S. Posted: 7/14/2021
Hello, the correct start capacitor replacement for your USQ1152 motor is the 161-193 MFD - BC-161Reply
Ron Posted: 1/13/2021
Would you know which capacitor goes on a century B2983 1.5 hp motor ?Reply
InyoPools Product Specialist Matt S. Posted: 1/13/2021
The B2983 1.5 HP dual speed motor uses 25 MFD - 628318-307 capacitor. You can also open the capacitor doghouse that sits on top of the motorto see the ratings on the capacitor's barrel.Reply
Chris Posted: 11/23/2020
I believe I need a new start capacitor for my polaris pool pump. The motor buzzes every 3 minutes or so when the master control unit tries to start the system, but the pump has not been operational for the past few days. It is an AO Smith 1081 pool pump (motor label says it is a replacement for Polaris PB4-60 Booster Pump). I can't find the model #, but the label does indicate HP=3/4, SF=1.5, FRAME=N56CZ. Please let me know what replacement part to order. THANK YOU!Reply
InyoPools Product Specialist Matt S. Posted: 12/3/2020
You motor requires the start capacitor, 124-149 MFD (BC-124)Reply
bmc Posted: 10/25/2020
Motor HP question Pentair Challenger High Head motor replacement - it is a B843 Y56Y listed as 2.0 HP and 1.30 SF - total horsepower of 2.60 (MagneTek Century Centurion). I am confused by the information in the installation, operation & service manual (http://images.inyopools.com/cloud/documents/pentair-challengerpumps-manual.pdf). It has a horsepower column subdivided into F/FE* and A/AE. I believe my pump is a 1 1/2 F, 2 A based on the part numbers for the impeller, diffuser, etc., cross-referenced to the document. What are F/FE and A/AE?Reply
InyoPools Product Specialist Matt S. Posted: 10/27/2020
I believe those columns are referring to full-rated and uprated motors, respectively.Reply
Jay Posted: 6/26/2020
I'm looking for a dual speed motor to replace the current "Centurion for PAC-FAB, HP ---, part 7-168454-25, FR Y56Y, TYPE CX, RPM 3450, VOLTS 230/115". I think it is 2HP, but interesting not showing on the label. Any help is appreciated. Thanks.Reply
InyoPools Product Specialist Matt S. Posted: 9/24/2020
the dual speed replacement motor needed for your B2858 is the Century 1.5 HP Square Flange 56Y Dual Speed Full Rate Motor - B2983Reply
Justin M Posted: 5/25/2020
I think my start capacitor is bad. Can you tell me what part number it is? Pump motor is a Hayward Northstar SP1615-Z-2-BC RPM: 3450/1725 Volts: 230 AMPS: 9.1/3.4 FR: P56J Type: CXPM Says it's an A.O. Smith Century Two Speed 1081 Pool and Spa Duty. This pump is for my pool which the Barracuda floor cleaner and skimmers tie into. Was hoping you could tell me what type of start capacitor I need without tearing the entire thing apart just to get the number. Thanks!Reply
InyoPools Product Specialist Matt S. Posted: 10/23/2020
Your SP1615Z2BC motor uses the 21-25 MFD (BC-21) start capacitor.Reply
Anonymous Posted: 4/29/2020
I have an AO Smith Century Centurion Pool pump that is humming, I think I may need a new capacitor. With out having to open it up, can I figure out which capacitor I need with just the pump and motor information?Reply
InyoPools Product Specialist Matt S. Posted: 4/29/2020
What is the part, model, or catalog number on your motor's label? A picture of the motor label would be most helpful.Reply
David Posted: 4/27/2020
My booster pump "AO Smith model # 7-173840-23 just hums when I turn it on. After several seconds it trips the internal breaker. The shaft turns freely when I manually spin it from the end. Does this mean the capacitor is bad? If so, How do I find out which capacitor to replace it with?Reply
InyoPools Product Specialist Matt S. Posted: 10/27/2020
it could be a bad capacitor, the only way to know for sure is to test it, How to Test a Pool Pump Capacitor. The correct run capacitor you need for the B625 motor is the 25MFD 370V - 628318-307Reply
danny Posted: 4/11/2020
i have a pentair pump but all i see is part 7-103262-20 w48y. im trying to find bearingsReply
InyoPools Product Specialist Matt S. Posted: 4/15/2020
Can you recheck that motor part number? I cannot find any cross-reference to it anywhere.Reply
Matthew.B Posted: 3/6/2020
Hello there My pump gave me some trouble now, it keep humming even with a new capacitor. I need to replace it or change just the bearings. Can u tell me link to the kit and the new motor. Thanks Here is the infos on the motor: SN: BY12-08 Part: 7-177452-03 Type: CX FR: Y56Y Hope it will help, thank you so much for your helpReply
InyoPools Product Specialist Matt S. Posted: 3/9/2020
When i search the 7-177452-03 part number, the result is the Century 2.0 HP Square Flange 56Y Full Rate EE Motor - B2843. That motor uses two 10000353 bearings. The gasket kit is matched to the pump housing and not the motor. To find the right gasket kit, I will need the model number of the pump housing.Reply
Amanda Posted: 1/23/2020
Hi I need finding a replacement motor Serial BW2-21 Part 187100-02Reply
InyoPools Product Specialist Matt S. Posted: 1/23/2020
What is the number before the "187100-02"? For example, the full number would be 07-187100-02 or 10-187100-02Reply
WG Posted: 12/22/2019
Hello, I do not find a model number on my motor, but am looking for a replacement for a motor with the following info: CAT: BN37 Serial: BY05-26 Part: 7 -177782-03 HP: --- SF: --- Type: CSM FR: R48Y Any info to help would be appreciate! Thanks!Reply
InyoPools Product Specialist Matt S. Posted: 12/26/2019
The catalog(CAT) is equivalent to the model number. The replacement for your motor is the 1 HP Thru-Bolt 48Y Dual Speed Low Amps Motor - BN37V1.Reply
Anonymous Posted: 12/14/2019
I'm looking a replacement for a Century two speed AO Smith 1 HP. Part#7-K56AA13A04-05 Serial#073123M FR-Y56Y TYPE-CXCP 1081 Pool & Spa Duty. Hope you can help me with a replacement number and where to find it. Thank you.Reply
InyoPools Product Specialist Matt S. Posted: 12/16/2019
Hello - I typed your part number into our search and it came back with this result: Hayward TriStar 1 HP Full Rate EE Dual Speed 208-230v Motor - SPX3210Z2BER. Please review the link so you may match the specs listed to your motor's label.Reply
terryo Posted: 11/22/2019
I have a 16 year old pump for my pool that has limited information on the label. I haven't found a replacement match and was hoping to get some guidance from the experts. Here's what I have...is there a newer version that's a drop in replacement? Century Centurion A.O.Smith Serial: CA10-19 Part: 7 -177452 -03 Type: CX FR: Y56Y HP: 2 SF: 1.3 PH: 1 HZ: 60 RPM: 3450 VOLTS: 208-230 AMPS: 11.0-10.2 Time: CONT ENCL: DP Form: KJM Code: GReply
InyoPools Product Specialist Hector F. Posted: 11/25/2019
The direct replacement motor for your motor part number 7 -177452 -03 is the model B2843. If you need the complete pump that includes the front pump housing then we will need that information as well. If you cannot locate any labels on that end then you can always email us images of that housing to upload@inyopools.com so we can review and further advise.Reply
richard vemian Posted: 11/18/2019
what replacement motor ? for mod.C48J2EB23,HP 3/4,SF 1, FR 48Y,RPM 2850 thank youReply
InyoPools Product Specialist Matt S. Posted: 11/19/2019
Is this motor for a pool or spa? Also, is this installed in the US or overseas? That looks to be a non-standard RPM. What is the HZ. 50 or 60?Reply
Tracy Felicia Posted: 11/9/2019
I search for replacement pump based on my current model # k63cxfgw-5043; HP 1.5; sf 1.60; fr 56J; but you’re site doesn’t come back with a full rated pump only the up rated pump. Can you please tell me how to get the correct pump that I need. Thank you.Reply
InyoPools Product Specialist Matt S. Posted: 11/11/2019
Your replacement motor is the 1.5 HP Full Rate NorthStar Replacement Motor - SN1152.Reply
Kirk Posted: 10/10/2019
Hi there, what spa water heater pump can I replace my old one? It is an AO Smith part number 0-187694-01Reply
InyoPools Product Specialist Matt S. Posted: 10/10/2019
Hello - when I put the number 0-187694-01 in the search box at the top of the page, the 3 HP Thru-Bolt 56Y Dual Speed 230V Motor - B2234 is the only result. Does the horsepower, volts, amps, and frame match your current motor's ratings?Reply
Wendell Mead Posted: 7/30/2019
Just replaced my motor but it seems like it is running slower than normal. Water is flowing but not fast enough. What's up?Reply
InyoPools Product Specialist Robert M. Posted: 8/1/2019
There are several reasons why the water flow could be slower. There could be an air leak, a dirty filter, full basket, or a clogged impeller.Reply