Polaris PB4-50 Booster Pump Impeller Assembly – 50Hz (R0520600)

Polaris PB4-50 Booster Pump Impeller Assembly – 50Hz

This is the genuine replacement impeller assembly for the Polaris PB4-50 booster pump, designed for 50Hz Australian electrical supply. The impeller is the rotating component inside the pump that generates water pressure to drive Polaris pressure-side pool cleaners. A worn or damaged impeller results in reduced water flow and poor cleaner performance.

This is Part #2 as shown in the PB4-50 exploded parts diagram.

Compatibility

The PB4-50 booster pump is the dedicated booster pump for the Polaris 450 pressure-side pool cleaner. If you own this cleaner and are experiencing low pressure or poor performance, this impeller is a common replacement part. If you have a different Polaris model, please contact us to confirm compatibility before ordering.

Specifications

What's Included

• 1 × Polaris PB4-50 Impeller Assembly (50Hz)

Frequently Asked Questions

What does the impeller do in a Polaris PB4-50 booster pump?

The impeller spins at high speed inside the pump housing to create water pressure. This pressurised water is directed to the Polaris pool cleaner to power its movement and suction. A damaged or worn impeller reduces flow rate and cleaner performance.

Is this impeller compatible with the Polaris 450?

Yes. The PB4-50 is the dedicated booster pump for the Polaris 450 pressure-side cleaner. This impeller (R0520600) is the correct replacement part for that pump. If you have a different Polaris model, contact us to confirm the correct part before ordering.

How do I know if my PB4-50 impeller needs replacing?

Signs of a failing impeller include reduced water pressure at the cleaner, the cleaner moving slowly or stopping, or unusual noise from the pump. If the pump motor runs but output pressure is low, the impeller is a common cause.

Is this impeller compatible with 60Hz pumps?

No. This is the 50Hz version (R0520600), suited to Australian power supply. If you are in a 60Hz region, a different part number is required. If unsure, contact us before ordering.

Where is the impeller located in the PB4-50 pump?

The impeller sits inside the pump volute (wet end), between the pump housing and the motor shaft. It is Part #2 in the official Polaris PB4-50 exploded parts diagram, visible in the product images above.