Aqua Signal BAY 15d Bulb 12V 25W - 90049

12V / 25W. Base Type BAY 15d. Double Contact Bayonet Base. Bulb Length 2 5/8", Bulb Diameter 1". For Aqua Signal Navigation Light series 40, 41, 42, 50, 55.

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.