Motor, Century, 2.0 Horsepower, 115v/230v, 1 Speed, 48 Frame | BN40SS

💧 Motor, Century, 2.0 Horsepower, 115v/230v, 1 Speed, 48 Frame

Made by Century, manufacturer part number BN40SS. It is listed for the equipment shown below, so check the model on your own unit against that list. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.

✅ Listed for

• Balboa Water Group Dura-Jet DJ Series Pumps
• JCM K KM Series Pumps Jacuzzi J
• LC LCUN2 LT LX LTC LCU LTCU LCM ULCU ULTCU Jacuzzi L
• Jacuzzi Piranha “A” Pump
• Pentair American Products Maxim Pump
• Pentair PacFab Dynamo Pump
• Acura Spa Magnaflow Pump
• Waterway HiFlo & HiFlo II Series Pump Replacement Parts
• Waterway Center Discharge Pool Pump (4 Screw Faceplace)
• Waterway Center Discharge Spa Pump (4 Screw Faceplate)
• Waterway Executive 48 Frame Parts & Wetends
• Waterway EX2 Spa Pump 48-Frame & 56-Frame
• Waterway Spa Flo/Iron Might 48-Frame Pump
• Waterway Supreme 48-Frame Above Ground Pump
• Waterway Workman 48-Frame Above Ground Pump
• Waterway E-Series Wet End (6 Screw Faceplate)
• Gecko Aqua Flo Flo-Master XP2 48-Frame
• Gecko Aqua Flo Flo-Master FMHP/FMCP Series Spa Pump
• Aqua Flo Tub-Master TMCP Series 100% Drain Bathtub Pump
• Gecko Aqua Flo Flo-Master XP2E 48-Frame
• Gecko Aqua Flo Flo-Master XP 48-Frame
• Center and Side Discharge Aqua Flo Circ-Master CMHP/CMCP
• Vico UltraFlo Pumps
• Center/Side Discharge 48 Frame Balboa Vico Ultima Series

🔄 Cross-reference part numbers

These part numbers are listed as alternatives for this part.

CAT: BN40SS MODEL: 186887 TYPE: CS FR: X-48-Y HP: 2.0 SF: 1.0 PH: 1 HZ: 60 RPM: 3450 ROT: CW

VOLTS: 230/115 AMPS: 10.0/20.0 MAX AMPS: SF AMPS: – TIME: CONT ENCL: ODP THERMALLY PROTECTED FORM: CODE: G INSUL CLASS: B AMB.: 40

• 12 & 3 O’clock Conduit Entries
• 40°C Ambient • Class B Insulation
• Rotation: CCW Pump End
• Through Bolt Mount
• 48/56 Base Mounting
• 3-1/2” Shaft Height
• Four Thru Bolts on a 5.146 Bolt Circle

Century replacement spa pump motor – 2 HP, 115V / 230V, single speed, 48Y frame

⚙️ What this motor is

This is a replacement motor only, not a complete pump. It is a thru-bolt motor, which you can recognise by feet underneath and four long bolts that pass right through the motor into the wet end. It is a 48Y frame with a threaded shaft. It runs on 115V / 230V, single speed. It bolts to the wet end you already have, so the pump housing, impeller and plumbing stay where they are.

✅ Check these before you order

• Compare total horsepower, not nameplate horsepower. Multiply the horsepower on your old motor’s label by the service factor next to it, and compare that figure. This motor is rated 2 HP.
• Mounting. Thru-bolt motors suit spa, jetted tub and above-ground pump wet ends, and do not fit square flange pumps, so check yours matches before ordering.
• Frame size. Measure between the thru-bolt holes: about 3-5/8 inches apart is a 48 frame, about 4-1/8 inches is a 56 frame. Measuring beats reading the old label, because some makers labelled 48 frame motors as 56. This one is a 48Y frame.
• Shaft. This motor has a threaded shaft. A threaded shaft has the impeller screwed straight onto it; a keyed shaft is smooth with a groove down it. The two are not interchangeable.
• Voltage. This motor is 115V / 230V. Read it off the old motor’s label rather than assuming from the wiring – a spa wired for 240V can still run a 120V pump.

🔧 When you fit it

• Fit a new shaft seal at the same time. A failed shaft seal lets water into the motor and is the most common reason a motor dies. Reusing the old one on a new motor is the quickest way to ruin it.
• Rotation. Pool and spa motors turn counter-clockwise seen from the shaft end, shown on the label as CCW or CCWPE. They cannot be reversed by swapping wires, so check the old label if it says anything different.
• Keep the horsepower the same unless you are changing the impeller too – the impeller is matched to the motor’s output.

🔩 Technical specifications

🔧 Exploded diagram and parts

This part belongs to the Acura Spa Aquaheat Pump Plus – 2" suction / 2" Discharge assembly. Everything listed below is something we stock for it, and the numbers match the diagram.

Parts that go with this

Commonly replaced parts

Parts commonly replaced on this item that we stock.