This cone-end 42mm (1-5/8" or 1-11/16") LED Festoon replaces Perko, Hella, and other halogen festoons in anchor lights, steaming lights and navigation lights. This cluster uses 30 high-output mini-SMD LEDs, giving it the brightest possible output in this form-factor.

NOTICE: This bulb does not fit the two-bulb powerboat stalk-mounted fixtures from Perko (Series 1100 two-bulb fixtures).

The USCG does not approve light bulbs, only fixtures complete with a light source. While these bulbs are the brightest LED replacement bulbs available, and will provide static visibility up to 5 miles, they don't have any sort of certification, and it is the user's decision alone whether to use this product to retrofit existing fixtures used for navigation.