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Replacement Tail Light Lens for Optronics ST36RB and ST37RB

Replacement Tail Light Lens for Optronics ST36RB and ST37RB

Item # A39RB
Our Price: $9.31
Accessories and Parts
Shipping Weight: 0.19 lbs
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Accessories and Parts A39RB - Light Lenses - Optronics
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Replacement tail light lens replaces a lost or damaged lens for an Optronics ST36RB or ST37RB tail light. Built-in reflex reflector. Durable acrylic construction. 1-800-940-8924 to order Optronics accessories and parts part number A39RB or order online at Free expert support on all Optronics products. Great prices and Fastest Shipping for Replacement Tail Light Lens for Optronics ST36RB and ST37RB. Accessories and Parts reviews from real customers.
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  • Reviews (229)
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Optronics Accessories and Parts - A39RB

  • Trailer Lights
  • Light Lenses
  • Rectangle
  • Optronics
  • Red

Replacement tail light lens replaces a lost or damaged lens for an Optronics ST36RB or ST37RB tail light. Built-in reflex reflector. Durable acrylic construction.


  • Replacement tail light lens replaces a lost or damaged lens for an Optronics ST36RB or ST37RB tail light
    • Replacement side marker lens (A37RB) sold separately
  • Built-in reflex reflector
  • Durable acrylic construction
  • Quantity: 1 tail light lens


  • Dimensions: 7 -1/2" long at shortest point and 7-7/8" long at longest point
    • 3-1/4" wide x 1/2" high

A39RB Replacement Tail Light Lens for Optronics ST36RB and ST37RB

Alternate part: A-39RB

California residents: click here

Video of Replacement Tail Light Lens for Optronics ST36RB and ST37RB

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

Video Transcript for Review of Optronics Replacement Tail Light Lens For ST36RB Or ST37RB - A39RB

Hi everyone, Andy here with, and today, we're gonna take a look at the Optronics Replacement Tail Light Lens. If you are looking to replace a lost or damaged tail light lens for the Optronics Aero Pro Incandescent Combination trailer tail light for the passenger or driver's side, then this is the part that you need. The model numbers of those lights that this lens will work with is for the passenger's side, ST36RB, and for the driver's side, ST37RB. Now, this lens features a built-in reflex reflector and is constructed from durable acrylic. Let me go ahead and give you some measurements here. And let's begin by looking at the length from the shortest point, we're gonna be sitting right at 7 1/2 inches long at the shortest point, then let me just jump up here at the longest point, we're gonna be sitting right at 7 7/8 inches long at that longest point.

In regards to how wide this light is, we're gonna be sitting right at 3 1/4 inches wide, and then let me give you the distance between those mounting holes, beginning left to right, we're sitting at 6 1/2 inches, and from top to bottom, we're gonna be sitting at 2 1/2 inches. And then looking at how high this light is, we are gonna be sitting right at half an inch at the highest point, just about half an inch. Now, the replacement side marker lens is sold separately, and if you are in need of that as well, you can find that on our website using item number A37RB. Now, since this replacement tail light lens is the replacement from Optronics, you can trust that it's going to fit the aforementioned model numbers of the Aero Pro Incandescent Combination trailer tail lights. Well, that's gonna conclude our look today, I do hope that it was helpful for you.

Again, my name is Andy, thank you for joining me..

Customer Satisfaction Score:

Customer Reviews

Replacement Tail Light Lens for Optronics ST36RB and ST37RB - A39RB

Average Customer Rating:  4.9 out of 5 stars   (229 Customer Reviews)

Replacement tail light lens replaces a lost or damaged lens for an Optronics ST36RB or ST37RB tail light. Built-in reflex reflector. Durable acrylic construction.


Perfect replacement for a broken tailli ght


Went by measurements on your web site and both lenses fit perfectly, I would recommend ETRAILER to everyone who needs hard to find parts


Our neighbor had broke his light cover on his boat trailer. He tried to find the part locally with no luck. All we had on the cover for identification were DOT numbers, but in searching this site someone else had asked for help in finding a part using these number. The person who replied to the question was able to narrow down which part they were looking for. It was exactly what we were looking for also. It fit like a charm and the price was very reasonable. We had it within a week and put it on right away. Our neighbor is very happy with this replacement and that we were able to find it on Etrailer!!


Fit perfectly! Have ordered these before from etrailer and always been satisfied. Fast shipping, good price and high quality!


The tail light lens for my MFI trailer was difficult to locate. I did a Google search for places to purchase the lens and Etrailer was at the top of the list. I was not familiar with Etrailer; however I was so delighted to find the lens I decided to give them a try. I could not be more pleased with the quality of the product but also their coustomer service. Etrailer will now be my first location to search. Thank you Etrailer!

Milton G.




Just what the doctor ordered


Tail light and lenses were exactly what I needed. They are the exact replacement for my broken one. The last time I had to replace the lights I couldn't find the original ones. When I changed over to these Optronics ST36RB and ST37RB I was happy to see etrailer carried them so I didn't have to do a complete change over like I had to of the originals.



Fortunately I havenot broken another one. Still looks good a year later. I would definitely order from Etrailers again.


I wasn't sure what to get for a replacement lens. However, customer service was right on the spot and got what was needed.


Perfect fit and easy installation


Fast delivery. Replaced the old taillight cover plate with this one easy enough without any hitches!





I was nervous that we would have electrical issues once water had gotten into the taillight enclosure, but I but this cover back on as soon as it came in and we haven't had any issues! Happy with this purchase and would recommend etrailer!


The replacement lens fit my 2006 Nitro boat trailer tail lights perfect. had the cheapest price and 1 week standard UPS delivery . Follow up emails status as well as UPS tracking. Will buy from etrailer again!


Just love it when what you ordered was the right part that was delivered promptly at a fair price! Writing this review is kind of like going to a dealership service department and telling them your vehicle is running perfectly with no problems. Thanks etrailer - one less thing gone wrong today!

Patrick M.


I havent backed into a dock yet, so product is still delivering its value!


Fits like a glove on my Tracker Trailstar Trailer, fits both right and left hand side, easy install, don't worry about optronics print on lens, they did both ways so it reads correct, not that you can see it anyway from a distance. Super fast shipping, packaged well.


Recently needed to replace the tail light lenses on my trailer and having done business in the past with etrailer I knew exactly where I needed to go.
Easy to navigate web site, precise description of items, very reasonable pricing and reliable shipping. All in all a no brainer for all your trailer needs.


I really liked your site...easy to navigate, great suggestions on additional parts purchased with this part. Shipping was reasonable and timely. Great tracking...both on a map and via tracking stamps...time, city, state.

If needed, I will visit your site again and refer others to your site.


Optronics is a good product I just bought a lens for my trailer that I shattered
And the new one fit perfectly and has been on for a year with no discoloration. Thank you


Fast shipping and worked perfectly. Better than replacing the whole light.


Etrailer is excellent in customer service. Their website allowed me to find what I needed. I was looking for a piece of red tail light that was a specific size rather than a specific tail light to specific make and model of a vehicle. I found what I needed. After I ordered it, I received an immediate email confirmation of my order and it’s tracking number. The order shipped on Wednesday, next day and arrived today on Monday.


This was the correct lens for my trailer. It fits both the right and left tail lamps. The only improvement I suggest is for etrailer to say it fits right and left in addition to listing the models it fits on. I had to look up ST36RB and ST37RB to figure that out. The "R" in the part numbers led me to believe it might be for the right only.


I was able to find this replacement lens at and it matched the original equipment in looks and quality. Any future trailer needs will be handled through this site.


Smashed my light and needed a replacement cover/lens. Found exactly my light and had the cover in just a few days. Price/delivery just what I needed. Back in business. Easy.


The trailer lights were just what I ordered and fit perfectly. The service was excellent and I believe they shipped the day after I ordered them and I receive them i just a few days. Shipping was cheap!


Great and quick service from Shery for the product I was looking for. Will definitely use etrailer in the future. Thank you.





Tried to find this lens at 5 locations with no success. They wanted to sell me a whole new tail light system for more than $30.00. Tried on line and the correct lens came up right away on etrailer at a very good price. Received it in perfect condition with in a few days. Great job!

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