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Replacement Side Marker Lens for ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB
(767 reviews)
Price: $9.34
In Stock
Optronics
Replacement Side Marker Lens for ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB
Part Number: A2RB
In Stock
$9.34
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- Reviews (767)
- Q & A (0)
- Videos (1)
- Photos
Optronics Accessories and Parts - A2RB
- Trailer Lights
- Light Lenses
- Optronics
- Rectangle
- 2-3/4 Inch Long
- Red
- 2 Inch Wide
Replacement Lens by Optronics, Inc.
Replacement side marker lens for STL2, STL3, STL4 and STL5 Series.
- Measures: 2-3/4" long x 2" wide x 1-1/4" deep
- Measures 2-5/16" on bolt hole centers
- Hardware not included
A2RB Replacement Lens by Optronics, Inc.
Alternate part number: A-2RB
Video of Replacement Side Marker Lens for ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Review of Optronics Replacement Side Marker Lens For STL2 STL3 STL4 STL5 Series - A2RB
Hi, everybody. Andy here with etrailer.com. And today, we're gonna take a brief look at this replacement side marker lens. Now, this replacement side marker lens is going to work for the STL2, STL3, STL4, and STL5 series. And let me get out my ruler here and just give you some measurements. The overall length of this cover is going to be sitting right at 2 3/4 inches long.
And the width, we're gonna be sitting right at 2 inches wide. And the depth, we're gonna be sitting right at an inch and a quarter. And then measuring those bolt holes center to center, let me line that up, we're sitting right at 2 3/8 inches, center to center. Now, it is important to note that the hardware is not included. But if you have one of those series of lights that I have mentioned previously by those model numbers, then this will work for you as a replacement.
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:
100% were satisfied with this product
0% of customers were not satisfied
Ratings & Reviews
4.9
767 reviews
by:
Douglas
06/18/2025
I did a search on your site based on the numbers printed on the lens. I think the numbers were related to federal safety standards, but regardless, the numbers were found in the 'help' feature, e.g. someone had asked about a lens with this number printed on the lens. The customer service reply to the previous question led me directly to the correct lens. The measurements in the picture ensured me that I was ordering the correct item.
Thanks!
Thanks!
by:
Alvin
09/01/2026
Perfect fit for my utility trailer and Optronics LED lights. Had to replace as a pallet slammed down onto the fender then light housing
by:
Jason
01/15/2021
Exactly what we were looking for! Both back marker lens caps were cracked and I couldn’t find these anywhere else. Good price, fast shipping. Pleasant experience as always with etrailer!
Jason
1/16/2022
Working out great, etrailer is one of the only places that carry’s this specific marker lens.
by:
Greg
04/22/2026
Everyone was very helpful. Ordered the wrong lense called right away and they took care of my mistake. Will do my business with etrailer
by:
James
08/07/2024
Perfect fit. Dimensions were spot on.
James
8/8/2025
Still performing well.
by:
John
12/01/2017
I just wanted to say thank you for lighting the way again. Great price and fantastic delivery service. Replaced broken lenses and a little touch up looking new again.
Definitely will be buying in the near future.
Definitely will be buying in the near future.
John
12/2/2018
Fantastic no complaints here
by:
Shawn
09/30/2026
Great product!
by:
Beth
10/08/2026
Item was priced right and came very quickly.
by:
Stephen
07/31/2026
Perfect fit , great quality lens. Would recommend highly
by:
Fred W
09/17/2020
Item arrived very quickly and fit perfectly. It replaced a broken lens on a utility trailer. Would definitely use etrailer.com again for my replacement trailer part needs. Thank you.
by:
Keith
11/23/2025
The shipping was quick and the product exhibited good quality. I was pleased. I would buy from them again.
by:
Patricia
09/22/2025
Perfect replacement for our trailers broken tail light. The measurements were accurate and very helpful. Product was quickly shipped. Very happy with my purchase.
by:
Mark
12/13/2025
Quick shipping great price!
by:
Tindalls Hardware
11/30/2025
I looked everywhere for these lens. Glad etrailer had them!
by:
Ralph
06/10/2026
Quick delivery
by:
Daniel
10/25/2025
Perfect replacement for my broken side marker lense.
by:
Christopher
03/17/2020
Worked like a charm! Triple Crown Utility 2020 dual axle 6.4 x 12.
Thank you!
Thank you!
by:
William
03/29/2026
As advertised. I had screws to fit.goog order service.
by:
Rick
02/14/2022
This purchase relates to auto hauler trailer I had built which I brought home in the dark and immediately backed it into a tree breaking the trailer light lens. I had been trying to replace that lens for over six months the trailer manufacturer’s sales location was of no use. Attempts to contact the headquarters thru their website fell on deaf ears. Trying to find the lens with the dimension clearly understandable on Amazon or web search did not leave me with any comfort I would be getting the proper lens UNTIL I arrived at etrailer.com. The size reference and description gave me confidence that I would be getting the correct lens. After pushing the enter button the have followed up re: order and shipment process in an intrusive way. The part has arrived and fits perfectly. I could not be happier with the product and the feeling that my business is appreciated. By the way did I mention this was just a $5.50 purchase.
Rick S
Rick S
Rick
2/15/2023
still there still performing fine stays away from trees
by:
Ron
03/21/2026
Great, just what I needed.
by:
Noe
11/25/2024
Excellent condition parts
Noe
11/26/2025
It worked as advertised, no issues and completely content till this day
Andrew N.
11/26/2025
@Noe Great to hear, Noe! I hope it lasts for as long as you own the trailer. :)
by:
William
04/24/2026
right part super fast delivery
by:
Warrior
03/19/2026
Side lens was exactly as described and exactly what I needed.
by:
Bill Estep
08/22/2016
Excellent product. I was storing a trailer for a friend and noticed this lens was missing so I went to the internet looking for it and found it on etrailer.
It's the perfect match of the one on the other side of the trailer even has the same numbers on it. Couldn't have fit better if I could've made it my_
self. Thanks-A-Million etrailer.
It's the perfect match of the one on the other side of the trailer even has the same numbers on it. Couldn't have fit better if I could've made it my_
self. Thanks-A-Million etrailer.
Bill E.
8/22/2017
Still working as good as the day I put the lens on the trailer. Owner of the trailer was pretty impressed that I was able to come up with the exact same lens thanks to etrailer.com
by:
Lou
08/05/2023
My daughter knocked the trailer light lens off. I Googled the number on the broken lens and found etrailer.com. I ordered a new one and had it in about a week. Could not have been easier and the cost was reasonable. Thanks folks.
Lou
8/6/2024
It is still as good as when it was new and I am still pleased.
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See what our Experts say about this Optronics Accessories and Parts
- Replacement Bulb and Side Lens for Optronics Tail Light ST4RBWe actually do, Mitch! To replace the bulb and side lens of the Optronics Tail Light # ST4RB you need the following: - Replacement Bulb # A1157B - Replacement Side Lens # A2RB
view full answer... - Replacement Side Marker Lens DOTP2PCA99 For A 2018 Patriot Dump TrailerWe can definitely help you there. Thank you for providing the part number as this makes it very easy to match up. The Marker lens you need is part # A2RB. This should be a direct replacement for your lens. It attaches with 2 screws that are 2-5/16" apart on center.
view full answer... - Replacement Trailer Taillight Lens Marked DOT P2PCA 99We have just what you need. Thanks for sending in the picture as that made it very easy. You are in need of the part # A2RB.
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- Replacement Lens for Trailer Taillight SAE AP2 99 DOTFor the SAE AP2 99 DOT lens we know that the part # A2RB is the correct replacement.
view full answer... - Replacement Red Lens for Trailer Light That Measures 2-3/4 x 2 x 1-1/4 InchesUsually the actual part numbers for a trailer light will be found on the light's base or on its rear surface. The DOT codes you found on the lens are not part numbers, but since you took measurements of the lens we can check for a replacement red lens using your dimensions. Optronics red lens # A2RB measures 2-3/4 x 2 x 1-1/2 and has mounting holes spaced 2-5/16-inches apart on center. Peterson lens # 55-15R measures 2-3/4 x 2 and has mounting holes spaced 2-5/16-inches apart on center....
view full answer... - Replacement Lens for SAE P2 99 D.O.T Marker Light on a 2000 Trailswest 2 Horse TrailerUsually the SAE number is not a reliable number to find the correct replacement for your 2000 Trailswest 2 Horse Trailer, however this has come up before in the past and we know that you use the: -Replacement Side Marker Lens for ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB # A2RB. This lens measures 2-3/4" long x 2" wide x 1-1/4" deep, and is 2-5/16" from bolt center to center.
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- Replacement Optronics Side Marker Lens CoverThe Replacement Side Marker Lens # A2RB will simply need a screw that fits the 1/4" diameter hole and is longer than 1-1/4", so the choice is yours as there is no recommended hardware. Based on the photo you provided, I do recommend replacing the entire # ST2RB fixture because the plastic housing is pretty clearly damaged. Either way I'm sure your friend will appreciate your gesture.
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- Replacement Side Lens for Optronics ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB LightsWe do have the replacement lens you are looking for. It is # A2RB. It will fit Optronics ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB lights.
view full answer... - Is a Gasket Needed to Install a Replacement Marker Lens # A2RBThere is not a gasket available for the Replacement Lens # A2RB that you referenced. You would not need one either as the assembly this lens is designed for is not supposed to be sealed. The lighting circuits are sealed so that they are protected from moisture, but the assembly itself is not. It actually will have drains in the bottom of it to allow water to drain out.
view full answer... - Availability of Replacement Side Marker Lens For Trailer Light PM440You might look at Optronics Replacement Side Marker Lens, part # A2RB. This side marker lens is the same length and width as the Peterson Replacement Lens, part # 55-15R, you have referenced, but is 1-1/2 inches tall. The # A2RB lens will fit on a trailer light like the Optronics Square Trailer Tail Light, part # ST2RB.
view full answer... - Does Replacement Side Marker Lens # A2RB Screw On or Clip OnReplacement Side Marker Lens # A2RB screws onto the light assemblies it fits on. I have included a picture that shows the lens with screws holding it on. This lens is a replacement for the side lens on Optronics STL2, STL3, STL4 and STL5 series lights.
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- Replacement Side Lens For Optronics ST2RB, STL2RB, ST3RB, STL3RB, ST4RB And ST5RB LightsBased on your information, we have a Replacement Side Marker Lens, Item # A2RB. It fits Optronics ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB lights. This lens should work for your situation. We do not have a brace available. If this will not work for you, let me know and I will make a different recommendation.
view full answer... - Replacement Parts For Combination Tail Light for Trailers Over 80 Wide # ST5RB and # ST4RBYes, we have the Replacement Side Marker Lens # A2RB that fits the Combination Tail Light # ST5RB. This will also work on the Passenger Side Light # ST4RB We also have the Light Bulb # A1157B available as well.
view full answer... - Replacement Side Marker Lens 2-3/4 Inches by 2 Inches by 1-1/4 InchesThe Replacement Side Marker Lens for ST2RB, STL2RB, ST3RB, STL3RB, ST4RB and ST5RB # A2RB is exactly the dimensions you referenced.
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Updated by:
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Douglas
7/11/2026
Great. It was the exact part I needed. The website was easy to use and helpful in finding the part.