Select Your Vehicle
view cartView Cart

Trailer Lights > Tail Lights > Submersible Lights > LED Light > 5-1/2 Inch Diameter > Round > Red > Flange Mount > Optronics


Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, Flange Mount, 3-Function, 10 SuperDiode

Optronics Trailer Lights

ratingratingratingratingrating (27 reviews)


Code:   STL42RB

Price:$16.95


Shipping Special

Shipping Weight: 0.5 pounds

Quantity: 






Optronics Trailer Lights - STL42RB

5-1/2" Diam x 1-15/16" D; Sealed, waterproof; flange mount on 4-1/4" centers; 3-prong plug connection; 10 super diode LEDs

Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, Flange Mount, 3-Function, 10-Super Diode

This is a sealed, round LED combination stop, turn, and tail light. The LEDs in this light are super diodes for exceptional brightness and performance. This red light measures 5-1/2" in diameter by 1-15/16" deep, including the flange. Lens and housing are one unit that is sonically sealed and waterproof, providing protection to the 10 super light-emitting diodes. The light draws 0.413/.026 amps at 12.8 volts. This light flange mounts through the three mounting holes spaced equally on the flange at 4-1/4" apart. A separate, industry standard, three-prong plug is used for the wiring connection to easily upgrade from incandescent lights. A three-wire pigtail is required to complete the installation.

  • Red, round trailer light is a combination stop, turn, and tail light
  • Sealed, waterproof housing and lens unit
  • 10 Super LEDs (Light Emitting Diode)
  • Accepts industry standard, 3-prong plug
    • Simple to upgrade from incandescent lights
  • Flange mounts through three holes in housing flange on 4-1/4 centers
  • 3-wire pigtail required for complete installation
  • Dimensions: 5-1/2" Diam x 1-15/16" D
  • Light draws 0.413/.026 amps at 12.8 volts

Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 44326R
Grote # 53292
Peterson # M418R-2

Manufacturer Specifications

Sealed, flange mount stop, turn and tail light. 10 super diodes for bright, dependable performance. Features sonically sealed, waterproof lens and housing in a single unit. Accepts industry standard, 3-prong plug for easy retrofit of incandescent lights. Requires plug for complete installation.

dimensions of LED light

STL-42RB 2-wire, 4" Round Sealed LED Stop, Turn or Tail Light - 10 diode 0.413V/0.026A by Optronics, Inc.





Video of Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, Flange Mount, 3-Function, 10 SuperDiode


Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Demo Optronics Trailer Lights STL42RB
Optronics Trailer Lights STL42RB Review

Video Transcript for Optronics Trailer Lights STL42RB Review

Today were reviewing part number STL42RB from Optronics. This is a sealed round stop, turn and taillight for your trailer. Were going to turn off our overhead lights and Ill show you how this works. Thats your taillight and I dont know if you can see, but all ten of the super LEDs are lighted. Now for your brake pedal, theres your brake light, and I dont know if you can see it but the six LEDs on the outside of the unit shine more brightly than the four LEDs in the center to make it super bright, and that should capture, definitely should capture the attention of the drivers behind you and hopefully keep you a little safer on the road. Heres your turn signal and for that also the six LEDs on the outside will shine more brightly.

Now we can turn our overheads back on and I can show you some other features of this light. First of all it does use a standard three-prong plug. Today were using this pigtail, part number A45PB, and this part is sold separately. Im going to put that aside for now so I can show you some features of this light. First of all as you can see it is flange mounted and it is sealed so there should be no water coming in there.

So thats a good thing. Also, because its flange mounted it will be harder for someone to steal this light off of your trailer, and because its flange mounted also its easier to retrofit your incandescent lights that youre using now. So its real easy to switch to LEDs, and as you probably know, LEDs burn thousands of hours as opposed to a couple of hundred hours for incandescent bulbs, and they also burn more coolly than incandescent bulbs. Theyre not so hot so thats an advantage also. Let me show you some of the measurements on this unit.

The light itself is 4 inches in diameter. With the flange mount its 5 inches in diameter, and its 4 inches between mounting holes from center to center. It has three mounting holes. Now lets turn this over and look at some of the measurements on the back. From the surface mount here to the flat top of the unit is 1 inch.

Now if you measure from the surface mount to the top of the socket for the pigtail thats 2 inches so the total depth is 2 inches. Now if youd like, you can use this steel mounting bracket thats sold separately. Your application may even require that you use it. This is part number BK45BB and the flange mounted light fits in very snuggly so nothing should be leaking in there. And, that is it for part number STL42RB, the round stop, turn, and taillight with ten super diodes made by Optronics.


Customer Reviews

Sealed, 4 - STL42RB

Average Customer Rating:  ratingratingratingratingrating4.7 out of 5 stars   (27 Customer Reviews)




- STL42RB

ratingratingratingratingrating by: Chris R10/25/2013

Is this review helpful?


This product should come with the pigtail for 17.00 dollars you can buy the light with the pigtail at the local farm supply. If nothing else it should be much more clear when you select this item it does not come with the pigtail105215



- STL42RB

ratingratingratingratingrating by: Robert H Bardes02/24/2014

Is this review helpful?


Received order very quickly. Lights are excellent and exactly as described. Already installed on trailer and they are great. Will keep e-trailers web site as a mainstay in my favorites to maintaining my trailer.117377



- STL42RB

ratingratingratingratingrating by: Wayne H.07/29/2013

Is this review helpful?


Have used this light before on my boat trailer and although it installs easily, the last one didn't seem to last very long. I am not sure how long they should last, but it couldn't have been more than a few years. The company service and website is excellent and a great source for the necessary parts one needs. I also enjoy their tutorials.92198



- STL42RB

ratingratingratingratingrating by: Whitewater William08/30/2011

Is this review helpful?


Replaced old post mount trailer lights with these flange mount LED submersibles. No more popped bulbs and bloody fingers from replacing them in rusty sockets every time I put the boat in the water. Great service, nice folks at etrailer.com. Thank you23168



- STL42RB

ratingratingratingratingrating by: Adam03/04/2011

Is this review helpful?


Great product should come with harness. 8421



- STL42RB

ratingratingratingratingrating by: Randolph E.02/26/2014

Is this review helpful?


Bought a 3 wire to 2 wire converter and changed the tail lights to the new LED. The turn signals still wouldn't work so I replace the flasher and all is perfect. I am HAPPY, HAPPY, HAPPY!117808



- STL42RB

ratingratingratingratingrating by: Russ R02/02/2014

Is this review helpful?


A good replacements for an old stock trailer I have. Fit the hole nice. Got the best price on web.115437



- STL42RB

ratingratingratingratingrating by: Donald W.12/07/2013

Is this review helpful?


Really like the helpful info your website provides.109488



- STL42RB

ratingratingratingratingrating by: Jim C.11/25/2013

Is this review helpful?


fast delivry 108399



- STL42RB

ratingratingratingratingrating by: jimmy G.09/26/2013

Is this review helpful?


Just got through installing, they really look great. They are a lot brighter than the old ones and the best price I could find. I got two for what most wanted for one. Thanks101660



- STL42RB

ratingratingratingratingrating by: Alex M.09/09/2013

Is this review helpful?


It is a great product, reasonable price and good service. Thanks!99006



- STL42RB

ratingratingratingratingrating by: Andy W09/09/2013

Is this review helpful?


Replaced my old tail lights on my pop up with these super bright LED taillights. If you have trouble with the lights flickering, make sure the ground wire is fastened tight. Fit was perfect!98960



- STL42RB

ratingratingratingratingrating by: Craig S.08/06/2013

Is this review helpful?


Nice light, but they need to include the connector with a pigtail so you can connect to existing wiring.93543



- STL42RB

ratingratingratingratingrating by: Mike h07/19/2013

Is this review helpful?


Direct replacement for my taillights on my stone ridge 5th wheel Rv. Simply plug in. Noticeably brighter. Excellent service from e trailer.90411



- STL42RB

ratingratingratingratingrating by: Chris06/12/2013

Is this review helpful?


Lights are huge, no chance of anyone not seeing the trailer with them on! Very bright and exactly as described. 84232



- STL42RB

ratingratingratingratingrating by: Brian R.05/21/2013

Is this review helpful?


Good quality and the terminals are packed with dielectric grease to prevent corrosion.81299



- STL42RB

ratingratingratingratingrating by: JAMES P.10/23/2012

Is this review helpful?


LOOKS GOOD ON MY ENCLOSED TRAILER,I LIK E.58005



- STL42RB

ratingratingratingratingrating by: Bill09/17/2012

Is this review helpful?


Great fast delivery and product exactly as shown54927



- STL42RB

ratingratingratingratingrating by: Rick07/10/2012

Is this review helpful?


Lights work as designed. Had no problems with installing on utility trailer or testing. Have not had a chance to use at night yet. I am guessing they will be much brighter than the old lights. 47392



- STL42RB

ratingratingratingratingrating by: Raymond06/23/2012

Is this review helpful?


Great Light, etrailer.com is the best 45404



- STL42RB

ratingratingratingratingrating by: Hank K02/05/2012

Is this review helpful?


Lights are excellent easy install nice and bright31094



- STL42RB

ratingratingratingratingrating by: Brian W.12/20/2011

Is this review helpful?


Quick delivery, great service. Haven't hooked up yet, but should be perfect.28371



- STL42RB

ratingratingratingratingrating by: KS Rancher08/06/2011

Is this review helpful?


LED's are really bright, wires are labeled, everything I expected out of the product21232



- STL42RB

ratingratingratingratingrating by: Core Autosport06/29/2011

Is this review helpful?


Great Light matches what we have on our trailer.18170



- STL42RB

ratingratingratingratingrating by: Mike Z06/07/2011

Is this review helpful?


Installed last night in 30 seconds and works perfect. Thanks.16328



- STL42RB

ratingratingratingratingrating by: Brian T03/15/2011

Is this review helpful?


The lights were excellent and installed easily as well as look great. They are much better than the originals. Thanks, Brian9407



- STL42RB

ratingratingratingratingrating by: Tom T02/21/2011

Is this review helpful?


We are installing them now and they look like they will do the job perfectly. Hope they last a long time because the individual bulb type seem to break all the time.7560



Ask the Experts about this Optronics Trailer Lights
Expert Answers about Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, Flange Mount, 3-Function, 10 SuperDiode - STL42RB                                           Do you have a question about this Trailer Lights?



Info for this part was:


Expert Research:
Robert G

Expert Research:
Michael H

Expert Research:
Jameson C

Expert Research:
John H

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.





Subscribe to email newsletter

Email  

privacy - we don't send unsolicited email



Only 21 Hours 26 Minutes Remaining

etrailer.com reviewsetrailer.com reviews

All images, layout and content copyright etrailer.com