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High Powered BA9S Deck / Steaming Light LED (BA-9S-5W)

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  • Aqua Signal Foredeck Deck Light Bulb 9040047000
  • Aqua Signal Deck Light Bulb LED 9040047000
  • Replaces Aqua Signal 20W 9040047000 (shown)


Finally, an LED replacement miniature BA9S bayonet base LED for the 9040047000 20W halogen foredeck bulb found in the Aqua Signal Series 25 masthead/foredeck combination lights! 

This LED bulb is a direct replacement for Aqua Signal 90470-7 (9040047000), Osram 64115, and the Perko 0068 (006812V20W) 20W halogen miniature bayonet bulb.   Guaranteed to fit your Aqua Signal Series 25 or Perko deck light.

The key to his bulb's powerful beam is a small aspheric plano-convex lens on the end of the bulb which protects the emitter from the elements and focuses to a 30° spot beam to light up the deck.  This bulb has a 5W LED that we drive at about 1.2W.  While this itself gives the bulb an effective light output (or equivalency) of about 15W, the additional bump in light output required comes from 100% of the light being collected and focused via an aspheric projection lens.  This eliminated the need for your reflector, which is a good thing, as the reflective capability of most Aqua Signal reflectors last only a few months at sea.

This 5W CREE Power LED, along with our driver electronics, are encased in an aluminum heat sink, which allow for a high power LED light without the damaging effects of heat.

A great LED at about the same price as the original halogen.  Check out the reviews, you won't be disappointed.

NOTE: We also carry the bulb for the steaming light portion of the Aqua Signal and Perko combo lights.  See our festoon bulb section here.


Number of LEDs: 1
Input Voltage: 10 - 17VDC (Integrated Constant-Current IC)
Wattage: 1.2 Watts
Amperage: 0.1A at 12VDC
Beam Angle: 360° 
Color Temperature: 6,000°K (Cool White),
LED Package Type: Single High-Output SMD
Lumen Output: 150 Lumens
Base Type: 9mm Single Contact Bayonet
Dimensions: 32mm length x ø12mm
Polarity Sensitive: No
Dimmable: Yes - with PWM Dimmer
Lifetime 30,000 hours
Warranty:  2 Years
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2 Reviews

  • 5
    Perfect replacement for original Perko deck light

    Posted by Unknown on 9th Mar 2017

    Exactly as advertised and described!

  • 5
    Better than I thought. Good replacement

    Posted by Paul S on 1st Jun 2015

    Was hesitant to buy this, but after having countless other regular bulbs fail, I decided to try this one.

    Easy enough to install. Same as the old bulb! fit fine.

    Light is a tad dimmer than the old bulb, but more focused, and more than up to the task. Not as much light scattering outside the boat (good thing) but the foredeck is very well lit.

    It is a 'blue' (cool) light, not a warm color like incandescent bulbs.

    Time will tell to see how it lasts in the marine environment. It can't possibly be worse than the original bulb!

    Good brightness, no modifications, very little power draw. Whats not to like?

    5 star product (providing it is reliable)

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