Pentair Diffuser 1F 1-1/2F 1-1/2A 2A | Challenger High Flow & SuperMax | 355077
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- 355077
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About This Item
The Pentair Diffuser (355077) is the OEM replacement diffuser for the Pentair Challenger High Flow and SuperMax pump series, sized for 1F, 1‑1/2F, 1‑1/2A, and 2A frame configurations.
The diffuser channels water from the impeller into the pump's volute, converting rotational velocity into pressure to maintain consistent flow through your pool or spa circulation system. A cracked or worn diffuser causes pressure loss and reduced pump efficiency — this direct-fit OEM replacement restores factory performance.
Specifications
| Pentair Part Number | 355077 |
| Part Name | Diffuser, 1F, 1‑1/2F, 1‑1/2A, 2A |
| Compatible Frame Sizes | 1F, 1‑1/2F, 1‑1/2A, 2A |
| Quantity | Each |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | Challenger High Flow | CHALLENGER-HIGH-FLOW | Diffuser for 1F, 1‑1/2F, 1‑1/2A, 2A Challenger High Flow Pump |
| Pentair | SuperMax | 354824S | Fits 1‑1/2HP and 2HP models. Verify fitment before ordering. |
| Pentair | SuperMax | 354816S | Fits 1‑1/2HP and 2HP models. Verify fitment before ordering. |
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.
Poolaroo Pro Tip
When replacing the diffuser, inspect the impeller and volute o-ring at the same time — these components experience the same wear cycle and replacing them together avoids a second pump disassembly. Confirm your pump's frame designation (1F, 1‑1/2F, 1‑1/2A, or 2A) matches the frame listed in your pump's documentation before ordering; frame size determines diffuser geometry and a mismatched diffuser will not seat correctly.