Does the package say the LED lights are CG approved?
I bought LED replacement’s for the existing bulb that is in my existing bow and stern light. It looks no different on the outside. Just a white LED bulb inside. I just typed in the bulb # and the LED equivalent # pops up. Both fit in the existing lights perfect.
bulbs don't matter, people get all excited about a uscg approval when any led goes way above and beyond the requirements. I have had them for the last 10 yrs. now and never had a problem one with a gw etc.
just be sure when you install them you maintain the visual requirements like the diagram and you are good to go.