
Quick overview
- Genuine Hayward Factory part SPX5500B for the Power-Flo Matrix pump.
- SP1590 series Listed for the Matrix SP1590 series, including the SP1591, SP1592 and SP1593.
- Plastic construction Molded plastic, the same material as the original.
- Part of the flow path The diffuser assembly is what directs water off the impeller, so a cracked cover costs you pressure.
- Cheaper than a wet end Replacing the cover is the alternative to buying a whole pump housing when one piece breaks.
- Direct replacement Goes in place of the cover already fitted, with no modification.
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Product details
SPX5500B is the Hayward diffuser cover for Power-Flo Matrix pumps in the SP1590 series, which takes in the SP1591, SP1592 and SP1593. It is the genuine Hayward part, molded in plastic like the original.
What the diffuser does
The diffuser sits over the impeller and shapes the water leaving it, turning speed into pressure before the flow reaches the pump outlet. When the cover cracks or warps, water escapes the path it is supposed to follow. The symptom is soft returns and a pump that is clearly running but not moving what it should.
Before you order
Open the pump and look at which piece has failed. This listing is the cover, and the diffuser body is a separate part. Confirm your model is in the SP1590 series while you have the housing apart.
| Brand | Hayward |
|---|---|
| Manufacturer part number | SPX5500B |
| UPC | 610377858540 |
| Type | Diffuser cover |
| Material | Plastic |
| Part type | Pool pump part |
| Fits | Hayward Power-Flo Matrix SP1590 series pumps, models SP1591, SP1592, SP1593 |
| Shipping weight | 0.75 lb |
| Ships | Parcel |
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