PSH - Plastic Impeller for Giant Pool Pump (Giant-21) - 2292818

PSH – Plastic Impeller for Giant Pool Pump (Giant-21)

This is the genuine PSH plastic replacement impeller for the Giant series pool pump, identified as position 55 in the official exploded view diagram. The impeller is the rotating core component of your pump: it spins at high speed to generate the water pressure that drives circulation through your pool’s filtration and sanitation system. Replacing a worn or damaged impeller restores full flow rate and protects the rest of the pump from strain.

Compatibility

Designed exclusively for the PSH Giant pool pump series — a high-power range running from 4 to 12.5 HP, targeted at large private pools and small public or collective installations. The plastic impeller variant is particularly well-suited for saltwater pools and pools treated with salt electrolysis, as the plastic construction resists the corrosive effects of saline water that can degrade metal components over time.

Why Genuine Matters

Using an authentic PSH impeller ensures a precise fit within the pump’s Archimedes volute housing — a patented PSH design that delivers superior hydraulic performance compared to standard diffuser-based pumps. An incorrect or aftermarket impeller can cause vibration, reduced flow, premature seal wear, and even motor damage. This genuine spare gives you the exact geometry the pump was engineered around.

Installation

The impeller is sold individually (1 piece) and corresponds to exploded-view reference position 55. Professional installation is recommended: the pump wet end must be fully disassembled to access the impeller, and the mechanical seal and gaskets should be inspected at the same time. Always isolate the pump from power and fully depressurise the system before beginning work.