Aqua Signal BAY 9s Bulb 12V 20W - 90470

12V / 20W. Base Type BA 9s Halogen. Bulb Length 1 3/16", Bulb Diameter 3/8". For Aqua Signal Series 20 Navigation Lights.

Bulbs for Navigation Lights
Nav lights are certified as a housing/lens/bulb combination. The USCG only approves through third party testing, entire fixtures including the bulb. Change to any of those components with a part that is not original and the light is no longer certified. The bulbs that are offered are the direct replacements of Aqua Signal incandescent bulbs certified with the light.