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120/240VAC P28S White Polar Star


120/240V 5NM navigation light rough service LED replacement for medium prefocus P28S bulbs.

Replaces Perko 120V 60W Medium Prefocus P28S Base Bulbs: 0342RSCLR & 0342004CLR etc.


5NM prefocus P28S LED nav bulb



Finally, a true one-to-one LED replacement for 120/240VAC 5NM navigation light incandescent bulbs.  This LED bulb is specially designed as a direct replacement for many 120/240V navigational light bulbs such as those made by Perko and aqua signal.  They are compatible with Perko fixtures series 1373, 1374, 1367, 1173, 1174, 1167, 1151, 1152, 1153, 0454, 0403, 0412, etc.  This high-quality high-power LED bulb is a means to end frequent incandescent bulb replacements.


  • Replaces Perko bulbs 0342RSCLR and 0342004CLR.
  • High-Power LED                                  5 NM Visibility
  • 120VAC and 240VAC                           Warm White
  • Long service life and shock-resistant.
  • Ultra-rugged with no filament to burn out or break.
  • Lead and mercury free, no UV output.
  • Designed in the USA for the USCG.    


Part Number:       9342004

LED Color:            Warm White

Lumens Output:  880 Lumens (60W Equivalent)

Visibility:             5NM

Replaces Perko Bulbs:








Voltage:              120/240VAC (100-250VAC)

Wattage:             8W

Dimensions:         ~119mm (4.7) long   38mm (1.5) dia.

FAQs and Comments:


1) We recommend using red LED bulb for nav lights with red lens, green LED bulb for nav lights with green lens, white LED bulb for nav lights with clear lens, bicolor LED bulbs (US patented, Dr. LED) for nav lights with bicolor lens, and tricolor LED bulb (US patented, Dr. LED)  for nav lights with tricolor lens.

2) We have our red, green, and white LED bulbs (our nav bulb LED engines) certified in nav lights with the corresponding colored lens for the 2nm intensity and the needed colors.

3) We do not recommend using white LED on nav lights with colored lens.

The reason being white LED emits mostly blue and yellow light (human see this as white, but not enough for 2nm for the red and green lens).  By using red LED on nav lights with red lens, only the needed red light is produced and will pass thru the red lens.  The same reason for green nav lights.  This is the best way to do this.

By the way, incandescent bulb emits a broad spectrum of light.  That is why you need to use a 25W incandescent bulb for 2nm red or green lens light but only need to use a 10W one for a clear lens.  This is no longer the best way to do nav lights.

sail boat with LED light Best Marine LED Lights and LED Replacement Bulbs.

Actually usable light at a reasonable price.

Patented & specially designed for the marine environment.

Testimonial from a Hallberg-Rassy 34 owner.

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