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LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens

LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens

Item # STL73RB
Our Price: $12.94
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Shipping Weight: 0.27 lbs
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Trailer Lights STL73RB - Submersible Lights - Optronics
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7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design. Great Prices for the best trailer lights from Optronics. LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens part number STL73RB can be ordered online at or call 1-636-306-4830 for expert service.
  • All Info
  • Reviews (81)
  • Q & A (0)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - STL73RB

  • Tail Lights
  • Oval
  • LED Light
  • Red
  • 7-9/16L x 3-5/16W Inch
  • Surface Mount
  • Submersible Lights
  • Optronics

7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design.


  • Oval tail light provides stop, turn, and tail function
  • 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 housing and lens
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Surface mount with built-in mounting flange - hardware not included
    • Available snap-on reflector trim ring (sold separately) removes the need for a separate reflector
  • 3-Wire design hardwires to trailer
  • DOT compliant


  • Dimensions: 7-9/16" long x 3-5/16" tall x 3/4" thick
  • Diodes: 6
  • Power draw at 12V:
    • Stop/turn: 0.161 amps
    • Tail: 0.007 amps
  • Lifetime warranty on LEDs

Optronics STL73RB Fleet Count Oval LED Tail Light Diagram

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.

Surface-Mount Light

Surface Mount Trailer Light Installation Diagram

Surface-mount trailer lights install using a flange or bracket with mounting holes. These lights lay flat against the trailer surface and only require a small, often pre-existing hole, for wiring. Mounting hardware is used to secure the light to the trailer.

STL73RB Optronics Fleet Count LED Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Surface Mount - Red Lens

California residents: click here

Customer Satisfaction Score:

Customer Reviews

LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens - STL73RB

Average Customer Rating:  4.9 out of 5 stars   (81 Customer Reviews)

7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design.


With the matching chrome rings, these fit my 2009 Airstream perfectly and made it look new again! Airstream suppliers wanted $69.00, just for one tail light. I'm so glad I replaced them all. Thank you!


Exactly as described, but there is no gasket included with the unit. A link to bulk gasket material is recommended.


they are going to work great on my off road trailer

Put them on a off road trailer I built and they are still working great
Harold - 10/03/2022


This tail light was better than the original. Perfect fit and easy to reinstall. Recommended to others in campground.


Received in just three days- exact match- couldn't get from the dealer.
Etrailer- excellent service through the multiple times I've needed them and help!!!


The look is what we were wanting and the mounting looks easy, we have yet to install the lights on our trailer. Good so far.Arrived on time and in a safe package


Perfect fit on my trailer


The larger base helped me cover existing holes that were from an older large oval style light. The extra length of the base of these lights combined with the chrome trim ring coved all signs anything else was ever there. The 6 led diodes on low are very chill and at first I was thinking it wouldn't put out adequate light but when brake was applied omg lots of light for 6 diodes. Before and after pictures help under below


Shipped, packaged, delivered sooner than expected. Part fit great, thank you.


Was fast delivery but had too ask for tracking is my only complaint.


Perfect fit and function. Received on time as well.


Great experience with 5 star service. The young lady who helped me was very patient with me since I was a little confused. She helped me find the correct taillight. I will shop etrailer again.


Worked great for me


Tail light was just as described. Recieved sooner than expected.


These are extremely dim & barely visible in direct sunlight. I should have researched further as my OE trailer lights had 10 diodes & these only have 6. There is a more expensive product with same mounting that has 22 diodes, so I will now have to buy these :(


Item delivered sooner than the estimated time of arrival.


Works perfect


Prompt and reliable!!


I broke my tail light on my new trailer and replaced it with this light. A year later and its still working good as new. I would recommend to anyone looking for a replacment light. Mine was a direct fit to my trailer(Legend Trailers).


Perfect fit. Excellent customer service and quick shipping


You guys are right on. The products are what they say and no miss orders. my orders have been there fast and before the time suggested. Doing great,keep up the good work.


Fit perfect. Works great!


Perfect fit and style.


exactly like the one on my new 5th wheel, this one not full of water, dealer could not get yet, trailer to new.
you guys had exact part and fast delivery


This also was a light that I was unable to find from other venders till I came across etrailer. Extras satisfied with you guys.
Thank you

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Replacement LED Tail Light for Triton Boat Trailer Part # 08478
    I was able to pull up some information on the Triton 08478 light that you mentioned and it appears that the LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens # STL73RB is the same part. I've linked a photo with the dimensions of this light, but it is also an oval LED light with 3 wires like the 08478, so it should do the job for you. If you've got a different sized light just let me know and I can see what we have available that would work.
    view full answer...
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  • What Circuits Does LED Trailer Tail Light part # STL73RB Cover
    Yes, the LED Trailer Tail Light part # STL73RB does perform function of running light, brake light, and turn signal. The low illumination circuit is for the running lights and the brighter is what activates with the brake and turn signal.
    view full answer...
  • How to Wire Optronics LED Trailer Tail Light w/ Flange
    I do not have a schematic but I can tell you how the LED Trailer Tail Light w/ Flange # STL73RB should be wired. The white wire will be your ground source, the black wire is for the running light, and the red wire will be for your stop/turn signal.
    view full answer...
  • Optronics Thinline LED to Replace a TecNiq T16
    I have a solution for you but we do not carry the TecNiq T16. I recommend the Optronics Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens item # STL64RB. The sonically sealed, waterproof housing and lens unit is submersible. This light has identical dimensions at 20-1/2" long x 1" tall. It has the same three functions with brake, tail, and turn. The Optrionics is a better light with 15 LEDs over the TecNiq T16 13.
    view full answer...
  • Is There An Amber Version Of The LED Trailer Tail Light STL73RB?
    I have a different option for you, but the LED Trailer Tail Light # STL73RB you were looking at is not available in amber. This is due to tail lights needing to be red to be in accordance with laws here in the USA. The closest amber light is going to be the GloLight LED Side Marker Light # STL175AMFB which is virtually the exact same size at 7-7/8" long x 3-5/16" tall and can be used as a side marker light and a turn signal if you desire. I included a video of the # STL175AMFB for you...
    view full answer...
  • What Reflector Ring Fits the LED Trailer Tail Light # STL73RB?
    I confirmed with my contact at Optronics that the reflector ring that you need for the LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible # STL73RB is the Snap-on Reflector Ring for STL78RB Series LED Lights # A78RXB.
    view full answer...
  • Recommendations for Replacing Wesbar 105825 Boat Trailer Lights
    I may have an alternate solution for you, but the light that the Wesbar # 105825 lens will attach to has been discontinued from Wesbar. With that being said, the Wesbar Wraparound LED Tail Light for Trailers Over 80" # 271594 (passenger side) and # 271595 (driver side), though not exactly the same, is one that commonly replaces the 403028, which is the light the # 105825 attaches to.
    view full answer...
  • How Does Taillight Ring # A78RXB Get Removed
    To remove the ring # A78RXB you basically would want to grab one side of the ring and gently pry up on the ring till it releases from the mounting flange. If it does not want to remove this way you can use a thin slot screwdriver and slide it down into the slots on the sides of the light. This will allow you to push on the hooks of the ring so that they will release from the light. See picture to see where to insert the screwdriver.
    view full answer...
    Image 1 for

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Aidan B
Installed by:
Aidan B
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
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Employee Daron K
Edited by:
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Written by:
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