1. Trailer Lights
  2. Optronics
  3. Tail Lights
  4. Round
  5. LED Light
  6. Red
Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens

Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens

Item # STL43RB
lowest price pledge
Retail:$17.59
Our Price: $12.46
You Save: 29%
Trailer Lights
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.26 lbs
Quantity: 
Optronics Trailer Lights - STL43RB
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug. Lowest Prices for the best trailer lights from Optronics. Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens part number STL43RB can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (85)
  • Q & A (19)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - STL43RB

  • Tail Lights
  • Round
  • LED Light
  • Red
  • 4 Inch Diameter
  • Recessed Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.


Features:

  • Round LED trailer tail light serves 3 functions
    • Stop light
    • Tail light
    • Turn signal light
  • Sonically sealed, waterproof housing and lens unit is submersible
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate lens and housing
  • Red lens over clear LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A45GB - sold separately)
    • Mounts in any 360 degree position
  • Accepts industry standard 3-prong plug (A45PB or A47PB - sold separately)


Specs:

  • Dimensions: 4-5/16" diameter x 1-15/16" deep
  • Diodes: 10
  • Power draw at 12.8V:
    • Stop/turn: 0.360 amps
    • Tail: 0.030 amps
  • Lifetime warranty on LEDs


Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 44302R
Grote # 53252
Peterson # M417R-2


Optronics STL43 Series Round LED Tail Light Dimensions

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.


Recessed-Mount Light

Recessed mount light

Recessed-mount trailer lights install underneath a housing or a grommet (A45GB - sold separately). These lights will extend into the mounting surface and require that a hole be cut into your trailer.



STL43RB Optronics LED 12V Combination Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Grommet Mount - Red Lens

Alternate part number: STL-43RB




California residents: click here



Customer Reviews

Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens - STL43RB

Average Customer Rating:  4.8 out of 5 stars   (85 Customer Reviews)

4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.

- STL43RB
by:

I am in the process of renovating a 1966 Airstream. I wanted to upgrade the tail lights and the clearance lights. I found etrailer.com on a web search. I ordered the round 4" LED, rubber 4" grommet, and Oval LED clearance light. The round stop with grommet adapeted perfectly into the lens on the Airstream. I will feel so much safer now with the added visability. The lights are stellar.



- STL43RB
by:

Ordered two, one had misguided plugs and would not work with my installed 3 prong male plug, the second finally plugged in with difficulty, but the light worked when installed. Glad I ordered two as just needed one now, and the second was a spare for future use. All through the order process the company offered great service and very quick shipping. Probably will use them again in the future for needed parts in a hurry.


Comments
As stated, the one didnt work at all and was trashed. The other worked with difficulty plug in was mismatched but is still working.
Capt R - 09/12/2020


- STL43RB
by:

Although UPS is a little rough on packages, everything arrived unbroken. The only thing I didn't realize was that there was not any pigtails for these tail lights. Everything else was great. I'll see about chasing down the pig-tails from the local trailer dealer.


Comments
Have had 0 problems since installed. Much brighter appearance. Have since replaced tail and marker lights with 3 other trailers. Great job guys and gals.
J.l. - 07/28/2020


- STL43RB
by:

Easy to install. Compatible with my old wiring harness.



- STL43RB
by:

Works well and the price is right. There are higher priced units but they aren't any better then this one. Never had a problem with an Optronics product.



- STL43RB
by:

These light are great quality and shipping was extremely fast. I only needed one but purchased 4 and changed all my brake lights over to LED. I also appreciate the plethora of information with regard to issues installing this item. I had a little trouble fitting them back in my existing grommet, but your videos were very helpful. We have used etrailer several times. It's our go-to. Thanks again!


Comments
After about a year of using these brake lights, they are all working well! I took a trip about 600 miles away, and they worked extremely well allowing other vehicles to see my horse trailer and keeping us safe! I would definitely recommend this product to others!
Megan - 01/19/2020



- STL43RB
by:

These lights are high quality and work great on my vintage camper.



- STL43RB
by:

fast seamless shipping. exactly what I needed!



- STL43RB
by:

Works great on my golf cart good tail l ights



- STL43RB
by:

eTrailer.com did a Terrific Job for us! We needed tail lights for the Dune Buggy we're building in three different collors (red, amber & clear), and eTrailer was able to provide these for us in otherwise identical lights. We received everything we needed (all of the right appurtanances) and they look great! We were also impressed with the timeliness of etrailer.com's shipping and delivery, as we received our order far more quickly than promised or anticipated. The License Plate Holder and Light also look great! (Although the light is a little dim.) Overall high marks, and I would use eTrailer.com and Optronics again.



- STL43RB
by:

I ordered a number of LED replacement components for my motorcycle trailer as well as a locking hitch pin and ball covers. I was very pleased with the shipment, product quality, and the attention to customer service (which came into play to make sure I did not incur shipping fees). Plus, the LED lights look great on my aluminum trailer. I will happily continue to do business with etrailer!


Comments
Excellent
Jim B - 08/08/2017



- STL43RB
by:

Tail light assembly for Yakima Rack and Roll trailer. This is a relatively low cost item which includes light bulb sealed in a waterproofed unit. Item was delivered very quickly.



- STL43RB
by:

Upgraded to LED. Less power usage and no bulb replacement. Love it.



- STL43RB
by:

Website easy to navigate, great pricing and quick Delivery



- STL43RB
by:

We have been changing out the brake lights on all of our trucks with these led brake lights over the years. They are easy to see during the day and the lenses do not oxidize and wear out like the normal fixtures do. Plus you don't get the melted section in the middle of the light from the bulbs getting hot. Love these bad boys!



- STL43RB
by:

great products!!!



- STL43RB
by:

Extremely pleased with my purchase. I have a set of tow light, needed to replace the LED housing. The manufacturer of my lights did not sell the housing. I would have to purchase the whole thing again. So glad I found etrailer in my search. Housing was just like my OEM housing, and worked perfectly.



- STL43RB
by:

This was to replace tail stop/turn light on my 5th wheel. Different pattern but works excellent and is actually a little brighter than what was replaced. However, service and delivery was absolutely fantastic. Would highly recommend e-trailer service. I will definitely use e-trailer again.



- STL43RB
by:

These lights are perfect! They have more LED's than the lights that came on my trailer and it looks better and is safer when towing at night. Perfect parts and at a great price! Thank you! Scott C.


Comments
Perfect part and now a year later still perfect! These are a lot brighter than the old ones for sure and still look great! Excellent value, great service! What a great combination in a supplier! Order with confidence!
Scott C - 11/01/2017



- STL43RB
by:

I got two of these because one of the lights on my trailer had been cracked when I lent it out and subsequently the running light no longer worked. The lights that they replaced were standard incandescent bulbs and I didn't like the fact that I couldn't just replace the bulb as they were sealed units like these. Because these are led's I expect them to last quite a bit longer so the fact that they are sealed also is not as much of a problem and in reality should help them last longer.



- STL43RB
by:

As described and excellent service from etrailer, as always.



- STL43RB
by:

Work great!



- STL43RB
by:

While I haven't actually used them on a trip yet, I have to say that installing the LED stop/turn/tail lights was almost a no-brainer. Once I figured out the correct sequence, the lights easily slipped into the existing rubber housings. I plugged in the electrical connectors and they worked perfectly. Knowing that they'll never burn out is comforting.



- STL43RB
by:

Product was delivered on time and in great condition Thank you


Comments
Lights are working great no problems
Louis - 07/23/2019



- STL43RB
by:

Received in a timely manner. The product was exactly as described on the website. Very pleased with the taillight.


25
85
Show More Reviews

Ask the Experts about this Optronics Trailer Lights

  • Tips for Installing New Trailer Clearance Light into Rubber Grommet
    Getting light assemblies into the grommets can be somewhat challenging. We have found that if you insert the grommet first (like you did), and then put a light amount of grease around the grommet edge the light will slide in easier. If you check out the video I attached you can see one of our installers walk through this process. Fast forward to the 1:45 mark.
    view full answer...
  • Is the Optronics LED # STL43RB the Correct Replacement for Peterson 426 Taillight
    The Optronics LED Taillight you referred to, part # STL43RB would indeed be a correct replacement for the Peterson 426 lamp you referred to. The # A45GB would be the correct replacement grommet and for a pigtail, you'd use part # A45PB. The LED replacement would be a great option, as they use a lot less power, would last much longer and are quite a bit brighter than their incandescent counterparts.
    view full answer...
  • Replacement 4 inch GloLight Trailer Light Recommendation
    It sounds like you are looking for the GloLight Trailer Tail Light # STL101RB which is a 4 inch diameter GloLight trailer light. I attached a review video for you to check out as well.
    view full answer...
  • Recommended Load Resistor for Installing Optronics LED Trailer Light STL43RB
    When high-efficiency LED type lights are installed in place of power-hungry incandescent bulbs it is often necessary to install a load resistor. The resistor turns some of the incoming power into heat and in doing so it mimics the higher power draw of an incandescent bulb. This will prevent the hyper-flashing common when LEDs are installed in an incandescent lighting system. For the Optronics Round LED Trailer Stop, Turn and Tail Light # STL43RB you can use their load resistor kit #...
    view full answer...
  • Trailer Tail Light Replacement for a Trulite model 44 LED Tail Light
    From my research it looks like the Submersible LED Optronics Trailer Light # STL43RB is a comparable replacement light. It is 4-5/16" in diameter and has 10 super diodes that function as stop, turn, and tail signals. You can install the light using a Pigtail, like part # A45PB or part # A47PB, and a Rubber Grommet # A45GB. A sample installation video has been linked for you to use as a reference.
    view full answer...
  • Tow Dolly LED Brake Lights Blow Stop Light Fuse on RV But All Other Lights Work Fine
    There could be a short somewhere inside one of the lights causing the problem. There certainly is not enough power draw from LED lights to blow a stop light fuse on a vehicle so it would have to be a short somewhere. If everything works fine with a trailer connected and all of the other tow dolly lights work as they should then all signs point to an internal problem with the lights. My recommendation is to replace the lights and inspect the wiring (just to be safe) and fix any broken...
    view full answer...
  • What is Included with Optronics 4 Inch Round LED Tail Light
    The Optronics 4 Inch Round LED Tail Light # STL43RB does not come with a pigtail. For a 3-Wire Pigtail with a 3-Prong Plug # A45PB is what you'll need. If you'd like the rubber grommet then # A45GB is what you're looking for.
    view full answer...
  • Can Sealed 4" Round LED Trailer Light # STL43RB Be Used Underwater in Saltwater Environment
    I spoke with my contact at Optronics and in order to use the Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, # STL43RB, in the saltwater environment, you will want to use marine grease like part # L11404 on the Straight 3-Wire Pigtail Plug, # A45PB, and then seal around the plug with a silicone sealant like part # 0160297. This will help to prevent any water from getting into the light housing during the constant in and out of saltwater service that your boat gets.
    view full answer...
  • Recommendation for a Bright LED Tail Light that Can Be Used on a Motorcycle
    Round LED Trailer Stop, Turn and Tail Light, # STL43RB, has 10 diodes in it that produce the light. If you are looking for more light, you may want to look at something with more diodes. The Round, Stop/Turn/Tail Light, # STL23CCRB, has 12 LEDs and a clear lens with the Miro-Flex design for maximum light output. It has the same dimensions as the STL43RB and can use wiring harnesses, # A45PB, or # A47PB.
    view full answer...
  • Recommended Three-Prong Wiring Plug For Optronics Sealed Round LED Trailer Light # STL43RB
    We do have the three-prong pigtail you can use with the Optronics Trailer Light # STL43RB. You will need part # A45PB. This has the three-prong plug with 10 inches of wire.
    view full answer...
  • Replacement Tail Light For Forest River Georgetown XL RV
    I'd be happy to assist you. It sounds like you need the Sealed, Flush Mount Tall Rectangle LED Trailer Stop, Turn and Tail Light, Grommet and Plug, 12 Diode # STL34RB but most of the pictures I see have round tail lights like the Sealed, 4" Round, LED Stop/Turn/Tail light, 21 Diode - Red # STL55RB. If this is not the correct part, then send me a photo with the measurements of the light and we will get you what you need. The numbers and letters that are actually printed on the light...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Installing Trailer Tail Lights with Two Wire Connections on 4-Way Wiring
    They are single function lights, so they can be used as running lights or stop/turn but not both. So for your trailer to be legal, you will need to run two on each side, one for the running light (brown wire of your 4-way) and one for the turn/stop light (green or yellow wire of your 4-way depending on side of the trailer). You will attach the power wire (green, yellow, or brown) to the red wire of your light. The white wire on your light will go to ground, so you will attach it to the...
    view full answer...
    Image 1 for
  • Troubleshooting 3 Wire LED Tail Light Installation
    Your old two wire lights definitely used the mounting screw as the ground. Your new LED lights with 3 wires will be easy to transition. You will connect the running light wire and the turn/stop wire just as before, and then you will run the ground wire directly to your steel frame. A bad ground is most likely the issue with your fuses blowing. Make sure your ground wire to your frame is metal on metal and your 3 wire LED lights like # STL43RB with 3 wire pigtail similar to the # A45PB....
    view full answer...
  • Can Bulb be Replaced on Peterson Red Flush Mounted Sealed Turn Signal Light 435800
    Peterson brake/turn signal light # 435800 is sealed and cannot be opened up to change out the bulb. I pulled one from the warehouse to verify this and cannot get the lens off (without breaking it) to access the bulb/interior of the light. What I recommend is to use an LED light, # STL43RB, because the LEDs will last much longer than a regular incandescent bulb. For a grommet use # A45GB and for a wiring harness use # A45PB.
    view full answer...
  • Trailer Wiring and Lighting Replacement for Trailer with 4.5 inch Red and 2.5 inch Amber Light
    For a 4-1/2 inch diameter trailer taillight that can do stop/tail/turn functions we have the part # STL43RB which would work well. For a rubber grommet then we'd need the part # A45GB. Then for a pigtail harness you'd need the part # A47PB. For the 2-1/2 inch amber lights you'd want the part # MCL59AB and for a grommet for this you'd need part # A55GB. For a pigtail for this you'd want part # A46PB. Then for 4-way wiring sold by the foot you'd want the part # 16-4B-1.
    view full answer...
    Image 1 for
  • 4 inch Round 24 Volt Trailer Clearance Light
    For a 24 volt version of the light you referenced you would want the part # STL23R24B as this light can be used on a 24 volt circuit.
    view full answer...
  • LED Replacement Light Recommendation For Bargman 68 Round 4-1/2 Inch Trailer Lights
    We have four different round LED stop, turn and tail lights that will fit in the 4-1/2 inch diameter holes in your rear bumper. You could use the Optronics light, # STL23RB, # STL43RB, # STL53RCB or # STL23CCRB. These are 4 inch round lights, but they require a rubber grommet, # A45GB, that allows 4 inch round lights to flush mount in a 4-1/2 inch cutout. Lights # STL43RB and # STL53RCB are sealed, submersible lights if you are adding these lights to a boat trailer. All of these lights...
    view full answer...
  • Replacement LED Tail Light For Pacific Trailer
    We have LED trailer lights available. If you have the dimensions of the light you want to replace that would help in finding the right replacement for your Pacific trailer. From my research I found that some of the Pacific trailers use part # STL42RB. This is a 4-inch round flange mount light that has 10 LEDs. It is a three function stop/turn/tail light. If you need a flush-mount light, we also have part # STL43RB. this is also a 3-function 10-LED light. If you are looking for...
    view full answer...
  • Could Optronics GloLight Trailer Taillight STL101RB Be Wired for Stop/Turn/Tail Circuits
    The GloLight LED Trailer Tail Light # STL43RB you referenced can be used for the application you mentioned. It's a dual intensity light which means that the lower intensity would cover the running lights and the brighter one would cover the stop and turn circuits. There isn't a way to operate the ring around the outside of the light separately. You'd want the harness part # A45PB to install the light. White wire is for ground, black wire is for running lights and red would be for stop...
    view full answer...

Do you have a question about this Trailer Light?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer lights for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer light information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Zack K
Video Edited:
Zack K
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T

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.


Product Experts Available Now!
Call 800-298-1624