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Tail Light for Trailers Over 80" Wide - 7 Function - Incandescent - Square - Passenger Side
(281 reviews)
Price: $14.96
In Stock
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Tail Light for Trailers Over 80" Wide - 7 Function - Incandescent - Square - Passenger Side
Part Number: ST2RB
In Stock
$14.96
Retail:$15.93
You Save: 6%
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- All Info
- Reviews (281)
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Optronics Trailer Lights - ST2RB
Highlights
- One Light, 7 Functions: Works as stop, turn, tail, rear clearance, rear reflex, side marker, and side reflex for trailers over 80" wide.
- Simple Hookup: Quick connect wiring and stud-mount ground make installation fast and secure.
- Built-In Reflector: Eliminates need for a separate reflector to meet lighting requirements.
- Tough Construction: Shockproof socket and durable plastic housing protect the bulbs.
- Easy Bulb Service: Uses replaceable 1157 and 168 incandescent bulbs for quick maintenance.
- Road Legal: DOT compliant for safety and visibility on public roads.
Features to know about
Reliable Lighting for Wide Trailers: 7-Function Incandescent Tail Light
When a trailer measures more than 80" wide, you need lights that cover every required signal and marker. This square tail light handles all seven functions—Stop, Turn, Tail, Rear Clearance, Rear Reflex, Side Marker, and Side Reflex—so you don’t have to piece together multiple lights. It meets DOT requirements and mounts to the passenger-side corner using included studs spaced 2" apart.
Simple and Secure Connection: Quick-Connect Wiring and Stud Ground
Wiring doesn’t need to be complicated. This light uses quick-connect terminals—just insert the stripped wire into the holes for a tight fit. It grounds right through the mounting studs, so there’s no need for a separate ground wire. A good ground keeps your lights working properly and prevents common issues like dimming or flickering when the headlights come on.
Durable Build That Takes Daily Use: Shockproof Socket and Plastic Housing
Rough roads can shake bulbs loose or cause early failure. This Optronics light uses a shockproof socket that cushions the bulbs against vibration, helping them last longer. The red lens screws securely to the durable plastic housing to protect the two replaceable incandescent bulbs inside—an 1157 for the main functions and a 168 for the side marker.
Straightforward Replacement Fit: Exact Dimensions and Cross-Reference Match
At 6-1/8" long by 4-9/16" tall and 2-7/8" thick, this light fits neatly in place of standard square trailer lights without extra drilling or adapters. It’s even a direct replacement for Uni Bond #TL4440, Wesbar #423062, and Peterson #M444, making swaps easy when old housings crack or wear out.
Proven Power Where You Need It: Bright Output on a 12V System
Running on a 12V DC system, the light draws 2.5 amps for stop/turn and 1.0 amp for tail functions—enough punch to stay visible day or night without overloading your wiring. It’s dependable lighting that keeps your trailer compliant and your signals clear every time you hit the road.
Specs
Configuration
- Passenger side: Yes
- Driver side: ST3RB (sold separately)
Dimensions
- Length: 6-1/8"
- Height: 4-9/16"
- Thickness: 2-7/8"
- Distance between mounting studs (center on center): 2"
Electrical
- Bulb type: Main: 1157
- Bulb type (side marker): 168
- Number of bulbs: 2
- Power draw at 12.8V (Stop/turn): 2.5 amps
- Power draw at 12.8V (Tail): 1.0 amps
Warranty
- Warranty: 3-Year
Manufacturer Cross Reference
- Uni Bond #: TL4440
- Wesbar #: 423062
- Peterson #: M444
ST2RB Optronics Combination Tail Light for Trailers Over 80" Wide - 7 Function - Incandescent - Square - Passenger Side - Right Hand
Alternate part number: ST-2RB
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- etrailer mistake
Ratings & Reviews
4.8
281 reviews
by:
Rick
09/26/2026
Quality and ease of installation
by:
Michael
06/30/2026
Delivered in a timely manner lights were exactly as described
by:
Larry
04/04/2026
It was what was I ordered and it was what was sent great product thanks
by:
Charlie
02/08/2018
The product, ST2RB trailer taillight, works as advertised; which is good. I backed into a tree that jumped in my way while turning around on our farm. Since the trailer has to be inspected to register, I have to repair the taillight. After searching the Internet for a replacement, I found etrailer had the correct part and I was fortunate they also have great service. I recommend this part AND this company for great customer service and rapid response to get me the product quickly. Thank you etrailer.
by:
Rhonda
09/16/2024
Ordered on Thursday and received on Saturday. Great service!
Rhonda
9/17/2025
Light is still working well
by:
Frank
02/15/2013
Great Website to navigate through which has an excellent selection. Very competative prices. User friendly when placing order. Item comes packaged well and arrives when promised.
I highly recommend etrailer.
Thanks
I highly recommend etrailer.
Thanks
Frank
8/18/2014
Product is working fine just as explained. Very satisfied and will consider etrailer for all my future needs. High recommendationThanks
by:
Rodney S
05/21/2018
I needed a replacement tail light for my trailer after accidently breaking it and found just what I needed at etrailer.com. The online purchase was extremely simple and at a fair price. I also appreciated the fact that the shipping cost was also reasonable unlike other companies that seem to up the cost to make an additional profit.
by:
Jim
11/23/2021
i ordered my trailer lights and they shipped them that day and i was back on the road legally with in a couple of days and this product was the exact factory part that came with my trailer. thank you etrailer.this is where i will buy my factory parts from .
by:
RE
10/17/2016
I was pleased to find that this tail light had the push-in wire connectors, thus installation was very simple. The price, including shipping, was not greatly different than that of a big box store where the product was not the Peterson brand and required wiring connectors.
by:
Michael
11/11/2025
was very satisfied with my purchase like dealing with this company
by:
Jesse
01/02/2018
I replaced the broken tail lights on my fathers trailer. They should have been replaced years ago. I found these optronics lights for a very responsible price. They are identical to the original ones. Installation was quick and easy. They seem to be a good product. At this price, I will be purchasing them again when _ _ it happens.
by:
Benjamin
10/06/2025
Exact fit. Super easy to install
by:
Gary Sneed
04/11/2016
5 Star Rating!! It was very easy to install.
Thanks etrailer.
Thanks etrailer.
Gary S.
4/11/2017
Great Matches Perfect!
by:
William
04/17/2020
Like the add says "Great Products at a low price"! Very satisfied with my order and quick shipment!
William F.
4/20/2021
Still going strong! Great product!!!
by:
Danny R.
09/10/2014
Product was exactly as described and matched the one I replaced on my trailer. Quick shipping and great packaging. Will definitely order from etrailer again.
by:
Steven
06/11/2020
Optronics products are always very good quality and value. They're just not fence proof!
E trailer always has good prices and quick shipping. Together good product and good service, what more could you want.
E trailer always has good prices and quick shipping. Together good product and good service, what more could you want.
by:
Eric
05/05/2015
Exact replacement for my damaged trailer light assembly. Product came with bulbs installed. Great price. Fast shipping.
by:
Steven H
01/07/2017
Light was purchased to replace damaged one. Found out backing up at night how just how handy the marker light sticking out the side on this light really is! Great price and fast shipping.
by:
Rich H.
04/06/2015
The taillight was just what I needed. Shipping did not take long ,and now my trailer is all one again. I will buy from you guys again when I need parts. Thanks Rich
by:
Antonino
09/14/2019
etrailer made the experience of replacing a set of trailer lights smooth and cost effective. Thank you etrailer. I worked in main frame information systems for thirty five years and I must say your user interface is perfect and your product is cost effective. Thanks again.
by:
Dale B.
10/12/2016
The product was a replacement for one that had been broken so I knew the qulity beforehand. the service was great and fast, Thank you etrailer!
by:
Matt
05/22/2025
Have had many of these for our trailer
by:
Joe
10/16/2018
Unfortunately, I just replaced this light, so it did not make the one year mark. The base where the bulb is supposed to lock into failed and did not keep the bulb tight against the contacts.
by:
Naomi
08/02/2022
This right tail light fit PERFECTLY on my Diamond C 12' utility trailer. It was exactly what we broke when we backed into an obstacle and was easy to install.
This webs was easy to use as well - the only problem was (if you can call it a problem) is that there were so many choices and it was a little difficult to choose the right part for the job.
This webs was easy to use as well - the only problem was (if you can call it a problem) is that there were so many choices and it was a little difficult to choose the right part for the job.
by:
Thomas
07/21/2020
This light was an exact match to the one that was originally on the trailer. Etrailer was a great company to deal with and I will be using them for all my trailer needs.
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See what our Experts say about this Optronics Trailer Lights
- Replacement Light Bulb For Optronics Square Trailer Tail Light # ST2RBThe standard light bulbs in the # ST2RB light is part # A1157B. This bulb features 8.3 watts for the tail light function and 26.9 watts for the turn and brake light function.
view full answer... - Can a Side Marker Trailer light be Wired to Come On with the BlinkerIf you want to make a side marker light blink with the turn signal it will have to be tapped into the turn signal/brake light wire for that side. But then it will also come on with the brake lights. And you would not want to also attach it to the running light circuit because it would back feed and lights would come on when they should not. Trailers are made with what is called a 2 wire system. They have combined turn signals and brake lights and the running light circuit is separate. In...
view full answer... - 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.
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... - Can LED Trailer Taillight Kit TLL160RK Replace Incandescent Square Trailer LightsTheres no reason you couldn't upgrade your square incandescent lights to the rectangle LED trailer light kit part # TLL160RK that you referenced. LED trailer lights are a great option as they basically last forever and only draw a fraction of amperage when compared to incandescent bulbs.
view full answer... - Troubleshooting Function of Additional Trailer Side Marker/Signal LightsThe problem you're having with your new wiring could be related to the ground, especially since it sounds like you may have added more lights than were originally on the trailer. It often happens that weird behavior from trailer lights results from a loose, corroded or insufficient ground connection. First make sure that each individual light's ground is made to clean bare metal. Some lights like # TLL12RK use a wired ground (white wire with ring terminal) while others like # ST52AA ground...
view full answer... - Trailer Lights Go Out When Headlights Are OnIt sounds like you could have more than one issue on your trailer but the most prevalent is a weak ground or so it seems. I recommend that you start by checking both the trailer side and vehicle side connector, by check I mean you should remove each of them, sand down the surface and then reattach with new mounting hardware. A visual inspection of the ground terminal is not sufficient to check for function. I would also run a jumper wire on the ground circuit from each tail light up to...
view full answer...
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Info for this part was:
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Adele M
Updated by:
Laura H
Updated by:
Wilson B
Updated by:
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Video Edited:
Dustin K
Installed by:
Cole B
Installed by:
Randy B
Video by:
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Charlie
2/8/2019
The product, ST2RB, trailer tail light is still going strong. Happy I worked with etrailer to replace my broken tail light. The light is on a 20’ trailer and I do not use it that much anymore but I can take it on the road if I need too!