Product Overview

The Century B2840V1 Pool Pump Motor is a 2.5 HP single-speed replacement motor designed for compatible in-ground pool and spa pumps that use a 56Y square flange motor. This motor operates on 230V power, runs at 3450 RPM, and is commonly used for high-flow residential pool circulation applications.

Built with ball bearings, automatic overload protection, a stainless steel threaded shaft, and open drip-proof construction, the B2840V1 is a strong replacement option when the existing pump motor is noisy, seized, overheating, tripping, or no longer starting properly.

Ideal For

In-ground pool pump motor replacement
Compatible Pentair WhisperFlo pump repairs
Compatible PacFab Challenger pump repairs
Square flange pool pump applications
Replacing failed 2.5 HP single-speed motors
Pool and spa circulation systems
Pool service technicians
Residential equipment pad repairs

Key Features

2.5 HP replacement pool pump motor
Single-phase motor design
230V operation
3450 RPM high-speed motor
60 Hz electrical rating
56Y / Y56Y square flange frame
Open drip-proof motor enclosure
Ball bearing construction
Stainless steel threaded shaft
Automatic overload protection
PSC switchless motor design
Counter-clockwise rotation facing the shaft end
Common replacement for select WhisperFlo, Challenger, and other square-flange pump applications
Professional installation recommended

Benefits

The Century B2840V1 helps restore circulation performance on compatible pool pumps without replacing the complete pump. When the wet end is still in good condition, replacing only the motor can be a cost-effective repair.

This motor is designed for pumps requiring a 56Y square flange, 230V, 3450 RPM, single-speed motor. Its stainless steel shaft and ball bearing design help support dependable operation in pool equipment environments.

Specifications

Customer-Facing Q&A

What is the Century B2840V1 used for?
The B2840V1 is a 2.5 HP replacement motor for compatible pool and spa pumps that use a 56Y square flange motor.

Is this a complete pool pump?
No. This is the motor only. It does not include the pump housing, seal plate, diffuser, impeller, shaft seal, pump lid, basket, unions, or plumbing parts.

Is this motor 115V or 230V?
This motor is 230V only. Confirm your existing electrical voltage before ordering.

What frame is this motor?
This motor uses a 56Y / Y56Y square flange frame.

What RPM does this motor run at?
The Century B2840V1 runs at 3450 RPM.

Will this fit a Pentair WhisperFlo or PacFab Challenger pump?
It is commonly listed for many in-ground pool pumps using a 56Y square flange motor, including select WhisperFlo and PacFab Challenger applications. Always confirm your existing motor label, pump model, total horsepower, shaft type, and frame before ordering.

Should I replace the shaft seal when replacing this motor?
Yes. A new shaft seal should always be installed when replacing a pool pump motor. Reusing the old seal can cause leaks and may damage the new motor.

Can this be shipped or installed in California?
Single-speed pool pump motor replacement may be restricted by California and other energy regulations. Confirm local code requirements before ordering or installing.

Confirm Before Ordering

Confirm the following before purchasing:

Horsepower: 2.5 HP
Total HP: 2.6 THP commonly listed
Voltage: 230V only
Phase: 1 Phase
RPM: 3450 RPM
Frame: 56Y / Y56Y square flange
Shaft: 5/8 in. threaded stainless steel shaft
Rotation: Counter-clockwise facing shaft end
Service factor: 1.04
Application: Compatible pool/spa pump motor replacement

Do not order by horsepower alone. Motor compatibility depends on voltage, total horsepower, service factor, frame, shaft type, rotation, mounting style, impeller size, and pump model. Always install a new shaft seal during motor replacement.