Product Overview

The Century B668 Pool Pump Motor is a 3/4 HP replacement motor commonly used for Pentair Letro-style booster pump applications. This single-phase motor operates on 115V or 230V power and runs at 3450 RPM for pressure-side pool cleaner booster pump performance.

Built with a stainless steel shaft, ball bearings, automatic overload protection, and a 56CZ frame, the B668 is designed to restore reliable motor performance on compatible cleaner booster pump systems. It is a strong replacement option when the existing motor is noisy, seized, overheated, electrically failed, or no longer driving the booster pump properly.

Ideal For

Pentair Letro booster pump motor replacement

Pressure-side pool cleaner booster pumps

Pool cleaner pump repairs

Replacing failed 3/4 HP booster pump motors

Residential pool equipment maintenance

Pool service technicians

Motor-only replacement jobs

Key Features

3/4 HP replacement pool cleaner pump motor

Single-phase motor design

Dual-voltage 115V / 230V operation

3450 RPM high-speed motor

60 Hz electrical rating

56CZ frame

Stainless steel shaft

Ball bearing construction

Automatic overload protection

Service factor 1.50

Non-reversible CCW rotation facing the shaft

Designed for Letro-style booster pump applications

Cost-effective repair compared to replacing the complete pump

Benefits

The Century B668 helps restore booster pump operation for compatible pressure-side pool cleaner systems. When the existing motor fails, replacing the motor can bring the cleaner pump back to proper performance without replacing the complete booster pump assembly.

Its dual-voltage design allows installation on either 115V or 230V systems when wired correctly by a qualified professional. The stainless steel shaft and ball bearing construction help support durability in pool equipment environments.

Specifications

Warranty & Compatibility

Confirm Before Ordering

Confirm the following before purchasing:

• Horsepower: 3/4 HP
• Total HP: 1.13 THP
• Voltage: 115/230V
• Phase: 1 Phase
• RPM: 3450 RPM
• Frame: 56CZ / S56CZ
• Rotation: CCW facing shaft
• Application: Letro-style booster pump / pressure cleaner pump
• Shaft: 5/8 in. threaded shaft
• Existing pump model: Confirm compatibility before ordering

Do not order based on horsepower alone. Motor compatibility depends on frame, shaft type, voltage, total horsepower, service factor, rotation, mounting style, and pump model.

Customer-Facing Q&A

Q: What is the Century B668 used for?
A: The Century B668 is a 3/4 HP replacement motor commonly used on Letro-style pressure-side pool cleaner booster pumps.

Q: Is this a complete pump?
A: No. This is the replacement motor only. It does not include the pump housing, impeller, seal plate, diffuser, shaft seal, plumbing, or cleaner system.

Q: Is this 115V or 230V?
A: This motor is dual-voltage and can be wired for 115V or 230V. Confirm your existing wiring and voltage before installation.

Q: What frame is this motor?
A: The B668 is commonly listed as a 56CZ / S56CZ frame motor.

Q: What RPM does this motor run at?
A: This motor runs at 3450 RPM.

Q: Does this fit Letro booster pumps?
A: Yes. It is commonly listed as a Letro booster pump replacement motor and is often shown for Letro LA01N pumps manufactured March 1997 to present.

Q: Should I replace the shaft seal when changing the motor?
A: Yes. A new shaft seal should be installed whenever replacing a pool pump motor. Reusing an old seal can cause leaks and damage the new motor.

Q: Can homeowners install this themselves?
A: Motor replacement involves electrical wiring, bonding, and pump seal installation. Professional pool equipment or licensed electrical installation is strongly recommended.