Pentair Diffuser for Challenger High Pressure Pumps | 355188Z
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- Backordered: contact us for ETA
- SKU:
- 355188Z
-
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About This Item
The Pentair 355188Z is the OEM replacement diffuser for the Pentair Challenger High Pressure inground pump, sized for 3/4 HP Full Rated through 1-1/2 HP Up-Rated configurations.
The diffuser channels water flow from the impeller and converts rotational velocity into pressure, directing water efficiently toward the pump outlet. A cracked, worn, or incorrectly sized diffuser reduces hydraulic efficiency, causes cavitation noise, and places additional load on the motor. Replacing it with the correct OEM part restores designed flow and pressure performance.
Specifications
| Pentair Part Number | 355188Z |
| Part Name | Diffuser |
| Fits HP Range | 3/4 HP Full Rated, 1 HP Full Rated, 1 HP Up-Rated, 1-1/2 HP Up-Rated |
| Quantity Included | Each (1) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | Challenger High Pressure Pump | CHALLENGER | 3/4 HP Full Rated, 1 HP Full Rated, 1 HP Up-Rated, 1-1/2 HP Up-Rated |
| Pentair | Challenger High Pressure Pump | CHALLENGER HIGH PRESSURE PUMP | 3/4 HP Full Rated, 1 HP Full Rated, 1 HP Up-Rated, 1-1/2 HP Up-Rated |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Diffuser sizing is determined by motor horsepower and rating (Full Rated vs. Up-Rated) — not by pump model alone. Before ordering, confirm your motor's HP and rating designation on the motor nameplate. The 355188Z fits 3/4F, 1F, 1A, and 1-1/2A configurations of the Challenger. If your motor nameplate shows a different HP or rating, verify against your pump's exploded diagram to confirm the correct diffuser part number.
