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120/240VAC P28S White Polar Star


120/240V 6NM navigation light rough service medium prefocus P28S LED replacement bulb.

6NM Certified per USCG COLREG 1972 & UL1104:1998 in a Perko 1369 light fixture.

Replaces Perko 120V 60W Medium Prefocus P28S Base Bulbs: 0342RS4CLR & 0342004CLR etc.

Replaces Aqua Signal 120V 240V Medium Prefocus P28S Base Bulbs: 90172-4, 90400172, 90173-4, & 90400173.

6NM USCG Cert P28S

This bulb is specified for use on the USCG and the US Navy ships.

  Perko Light 6NM

5NM prefocus P28S LED nav bulb



Finally, a true one-to-one LED replacement for 120/240VAC 6NM navigation light incandescent P28S bulbs.  This P28S LED bulb is specially designed as a direct replacement for many 120/240V navigation light P28S bulbs such as those made by Perko and Aqua Signal.  It is compatible with these Perko fixtures 1367, 1369, 1370, 1372, 1373, 1374, 1167, 1169, 1170, 1172, 1173, 1174, 1151, 1152, 1153, 0454, 0403, 0412, etc. and Aqua Signal 70 series fixtures.

This high-quality, long lasting P28S LED bulb eliminates having to frequently replace short service life incandescent bulbs.

Developed by Dr. LED at the request of the USCG to improve the reliability of their navigation lights that use P28S bulbs, and to decrease the often hazardous task of having to replace incandescent P28S bulbs while underway, this bulb has also been chosen by the US Navy for use in their P28S bulb navigation lights.

It is the only USCG certified after-market replacement P28S LED bulb currently available.


  • 6NM Certified and Much Brighter than the original incandescent bulb.
  • 3NM rated for port and starboard lights.
  • Replaces Perko Bulbs 0342RS4CLR and 0342004CLR.
  • High-Power LED.                                 6 NM Visibility.
  • 3 NM Visibility for Red and Green Lights.
  • 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 (65W Equivalent)

Visibility:             6NM for clear lens, 3NM for red and green lens.

Replaces Perko Bulbs:

                            0342RS4CLR (60W 120V)

                            0342004CLR (60W 120V)

                            0342003CLR (40W 120V)

                            0342002CLR (25W 120V)

                            0342001CLR (15W 120V)

                            0342000CLR (7.5W 120V)

                            0342220CLR (65W 220V)

Replaces Aqua Signal Bulbs:

                        90400172, 90172-4 (60W 120V)
                        90400173, 90173-4 (65W 230V)

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.

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