There are many LED nav lights. But For a replacement LED bulb as sailing dog states and I agree from what I have read. The only LEGAL replacement is from Dr. LED and only for the aqua signal 40 or 41 (the light is the same just mounted different) it has been repeated here many times that you cannot put a white LED under a colored lens. green under green and red under red whit under white or clear. You get the wrong color. I found the info easly here when I did mine.