Steaming light is a steaming light.
Nelson, remember that most parts on production boats are whatever works best during the given production run. It's not like a car, with which you can walk into Pep Boys and ask for a water pump for a '65 Skylark 340 and it's always the same part for every car. A steaming light is a steaming light. Buy a good one and call it done.
Most production boats these days use the Aqua Signal foredeck-light/steaming-light combination unit (see the WM catalogue). I'll bet this is what your boat has. I chose the Forespar one because it's better looking, especially where it aligns along the sides of the spar. Also, I know the guys at Forespar and am not worried about getting spares, at any time in future-- like for the steaming-light lens, of which it's good to have a spare from the start, because flailing pole lifts, errant spinnaker halyards and the leech of the jib have been known to remove it for you.
Dr LED (sailorssolutions.com) can supply replacement bulbs for just about any 12vdc application; so don't worry if the fixture is initially meant for incandescents. The bulbs can be remarkably cheap (like $39, in some cases, for something that lasts 7-10 years). I was in Batteries Plus today (weirdly, it's right next door to West Marine-- how did Big Blue allow that?) and they have LED bulbs for automotive ('RV') applications. They're priced at half of what the Dr LED ones are. It made me wonder how long a non-marinized bulb would last in a boat lamp; but I'll be sure to try one in a lamp I can afford to lose (like maybe the foredeck light) before I risk it in something I'd much rather not do without.
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