Pentair Diffuser | Challenger High Pressure Pump | 355270Z Pool Liner Insulation inspect the light cord and

inspect the light cord and cord cap O-ring for wear at the same time

Confirm your pump's existing color before ordering

The product can be diluted and put in a spray bottle which can be used as a tile and surface cleaner to remove oil and scum

A failed or degraded O-ring in this position results in internal valve leakage or loss of flow control between the diverter and check valve sections — making this a direct-replacement service part when the valve develops a bypass or weep

Pentair Diffuser | Challenger High Pressure Pump | 355270Z Pool Liner Insulation inspect the light cord andThe Pentair Diffuser (355270Z) is the OEM replacement diffuser for the Challenger High Pressure inground pump, sized for the 11 2 HP Full Rated and 2 HP Up Rated configurations. The diffuser sits between the impeller and the volute, converting the high velocity water leaving the impeller into pressure. A cracked, worn, or incorrectly sized diffuser reduces hydraulic efficiency, disrupts flow through the pump, and can accelerate wear on the impeller.