Response to Hi A.D., Yes this is the proper replacement bulb for your Hayward SP0583 light. We would also suggest replacing your Hayward Lens Gasket when replacing your bulb. If you would like to upgrade to LED Color Changing then you can go with the PureLine PureColors LED Color Changing Bulb. We also have this Video on How to Replace a Pool Light Bulb which may help when you tackle this project.

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