Part # B846
Warranty 1 Year
Manufacturer Code B2846
Dimensions 11.5" L x 6.5" W x 6.5" D
Alternate Part #'s 1103645401, 1203185410, 135103, 135104, 14796, 164651, 165099, 165904, 168451, 168457, 177078, 186236, 190020, 193266, 193984, 196237, 2K442, 35-5371, 355371, 5KC38NN2520BX, 5KC38NN2520X, 6K946, 7-186236-20, 7-186236-28, 7-193266-20, 75232, 8-186236-20, 8-193266-20, A0104800, A100CH, A100CHL, B2846, B524, C1304, C48J2EC102A2, EB846, P711, SQ105, SQ1052, SQD50FL1, V14796
Century Centurion replacement motor for Pentair WhisperFlo and Challenger full rated pumps. Specifications: HP = 1/2, RPM = 3450, Voltage = 115/230, Amps = 10.8/5.4, Service Factor = 1.95, Frame = 56Y, Shaft = Threaded. *Please Note: This is the correct replacement motor for the Challenger 1/2 HP full-rated pump.
Obviously this is the correct motor. Can you direct me to the proper diffuser & seals/gasket kit? Thank you
Hi Gary, yes this is the correct replacement motor. You appear to have the Ultra Flo Pool Pump and you will require this Ultra Flo Seal Kit. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
Thanks Patrick! It is in fact an ultra flo pump & I’m seeing now it’s discontinued. If I was to replace both now what is a comparable drop-in replacement that you would you recommend?
Hi Gary, Unfortunately there is not a drop-in replacement so you will have a little re-plumbing. If you wanted to go with a single speed pump then I would suggest this Waterway 3/4 HP Champion Pump If you wanted to go with something super energy efficient then I would suggest this 1.4 HP Waterway Variable Speed Pump Here is an article we wrote on the Energy Savings of a Single Speed Pool Pump Vs. a Variable Speed Pool Pump.
I was wondering if this is what I need to get my solar going again. Pump model PE5C-180L and motor model K48J2PA105C1? PLEASE HELP dont know where else to check
is this b2846 compatible with my whisperflow wfe-2
My 11 year old Pentair WFE-2 runs a water feature 12 hrs/day. It won't start anymore, just hums & gets hot. I replaced the starter /run capacitor & it still won't start. It had the same problem a couple of years ago & I replaced the cap and it ran flawlessly until now. Can't spin the shaft w/ my fingers anymore but I can start it with a wrench on the shaft & it runs all day. Sounds normal but won't restart by itself. Is this repairable or do I need a new motor, if so, which one. See pics.
I need to replace a pump motor
Pump model No: / Part No:
SF-N1-1/2F / 340036
I search for the exact motor replacement but can not find it. Could you tell me what you would recommend replacing it with.
Hi Chester, The 1/2 HP Pentair OEM Motor (355018S) will have to be special ordered but the B846 is an aftermarket replacement which can be used as a replacement. We also recommend that you replace the seals which are all listed on the Pentair Superflo Parts page.
I need to replace my whisperflo 7-186236-20 motor. I saw a suggestion for the B846, B2846 but it is only 1/2 HP. Mine is 3/4 HP. DO YOU HAVE THE EXACT SAME SPECIFICATIONS BUT FOR A 3/4 Hp motor?
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?
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.
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?
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.
Why should I purchase a Tune Up Kit?
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.
Why do I need to purchase a new shaft seal?
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.
What is Service Factor?
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.
(5 out of 5 stars) Pool Filter Motor
Reviewed By: DreamBigGoGreen from Bowie, Maryland ()
Pros: Customer service, shipping time, price and product
Cons: None that I can think of
Best of all is the wonderful customer service help provided by Inyopools. The product was here in the time specified and the price was considerably less than the 5 other companies I checked with first. The product was as specified and ordered and hasn't given me any problems to date. It was installed about a month ago.
(5 out of 5 stars) Substitutes for obsolete Pentair/Pinnacle 3/4 HP motor
Reviewed By: David T. from Jemez Springs, NM ()
Pros: efficient, quiet
When the Pentair/Pinnacle pump included with my Endless Pool failed (after eight years), I found it was obsolete and the Centurion B2846 (aka B846) was the recommended substitute, more efficient than its predecessor. The Centurion pump does not come with a cord. Inyo Pools shipped it the day after I ordered it, and it arrived three business days later. Richard, at Inyo Pools, helped me install it properly. It works fine. It is designed to run quite warm to the touch. Too soon to know how long it will last.
(5 out of 5 stars)
Reviewed By: Ali Y. from Lorton, VA ()
It replaced my 15 year old pump . It is very quite we cant hear it runing . It was easy to replace . So far very good . Price was best i could find . They promise to deliver by friday and it was there . I will buy again for sure.
(5 out of 5 stars) The replacement motor you want
Reviewed By: Jimbob from Raleigh, NC ()
Pros: Easy to install
I installed this motor on a five year old Pentair pump with failing bearings. It took me under an hour and I had never done it before. It's working great and is quieter than the pump was when it was new. You should replace the seal and use the kit they sell at INYO and you can replace some gaskets at the same time.