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LED Tail Light for Trailers Over 80" Wide - 8 Function - Submersible - 23 Diodes - Driver Side

LED Tail Light for Trailers Over 80" Wide - 8 Function - Submersible - 23 Diodes - Driver Side

Item # STL37RPG
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Trailer Lights STL37RPG - Submersible Lights - Optronics
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7-7/8" x 3-1/4". Low-profile tail light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. Molded 2-way plug. PC Rated. Lowest Prices for the best trailer lights from Optronics. LED Tail Light for Trailers Over 80" Wide - 8 Function - Submersible - 23 Diodes - Driver Side part number STL37RPG can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Optronics Trailer Lights - STL37RPG

  • Tail Lights
  • Rectangle
  • LED Light
  • Red
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • License Plate
  • Submersible Lights
  • Optronics

7-7/8" x 3-1/4". Low-profile tail light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. Molded 2-way plug. PC Rated.


  • Low-profile trailer tail light serves 8 functions
    • Stop light, tail light, turn signal light, side marker light, side reflex reflector, rear clearance light, rear reflex reflector, and license plate light
  • Sealed, waterproof construction is submersible
    • Light is designed specifically for boat trailers
  • 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 plastic housing
  • Red lens over white LEDs
  • Mounts on surface of trailer - hardware included
  • Molded 2-way plug and separate ground wire
  • DOT compliant
  • PC rated


  • Configuration: driver's side (left-hand side)
    • Passenger's-side light (STL36RPG) sold separately
  • Dimensions: 7-7/8" long x 3-1/4" tall x 2-7/8" deep
  • Diodes: 23
  • Power draw at 12.8 volts:
    • Stop/turn signal light: 0.181 amps
    • Side marker light: 0.047 amps
  • Lifetime warranty on LEDs

Optronics STL37 Series LED Combination Tail Light Diagram

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 circuit board is sealed, which means that water will not damage the diodes or circuit board.

PC-Rated Lights

Diagram of light spread for PC rated light

A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.

STL37RPG Optronics Aero Pro Combination LED Taillight for Marine Trailers More Than 80" Wide - Red Lens - Left Side

Alternate part number: STL-37RPG

California residents: click here

Customer Reviews

LED Tail Light for Trailers Over 80" Wide - 8 Function - Submersible - 23 Diodes - Driver Side - STL37RPG

Average Customer Rating:  4.9 out of 5 stars   (484 Customer Reviews)

7-7/8" x 3-1/4". Low-profile tail light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. Molded 2-way plug. PC Rated.


Opened up the package, Walked out to my boat, snapped off the old light, snapped on the new light, fired up the truck and poof there were lights. Bought two one for the next time. Trailer maintenance is no longer a big deal.

Well about a year has passed and the lights are still perfect. No issues what so ever. Since then I have added reverse spot lights, led strips, and replaced the marker lights. Etrailer is my go to.
Winslow - 09/08/2020


Bought these lights to replace the broken ones on my 2013 Nitro Z9 trailer and they matched exactly.


The light was easy to install on my trailer both because the light housing is easy to work with and mount and also because the wiring plugs matched the existing wiring plugs on the trailer. The older incandescent lights had failed due to water getting into the housing. These lights seem to have a nice solid seal and also the LEDs should be resistant to failure if a little water leaks in over time. Also the LEDs are much brighter than the older incandescent lights we replaced. Very pleased with this product.


Javelin Boat trailer tail lights. Original lights were pre-wired with 2 prong plug. Needed to replace lights. Wanted same lights. Dealer did not stock, was not helpful in finding them. etrailer was amazing. The young lady whom I dealt with was extremely helpful. Found the correct lights for me. Installation was a breeze. Lights work beautifully. Definitely 5 stars. Will use again.


Excellent service and fast delivery made for outstanding first time buying experience! The trailer lights I ordered were exact replacement and installation was a breeze.


Received my led trailer lights, nice lights and fast shipping. Will be using your buisness again


Order these boat lights for a friend of ours boat trailer, they arrived sooner than we expected was so easy to install and works great, looks awesome, very pleased. I called first to see if they carried these taillight and the employee was so nice and helpful, she offered to send a e-mail with the link to order the tail lights, very polite and concerned about our purchase. We would definitely recommend this company and very impressive with the employees that helped make sure we got the right items we needed. If I could give them l0 stars I would. Thank You.....


These lights are great. The original lights were just bulbs and the seals would fail, allowing water to get in. These LED lights are bright and waterproof and were a perfect replacement.


Opti electronics LED trailer lights Urostyle UPS crushed my box when they delivered my lights and the light was broken you trailer mailed me a new one within three days unbelievable service thank you so much light is in perfect condition now !??


Great product - updated my old light to led submersible lights. Easy to install and they work perfectly.


Bought to replace a trailer light I ordered it on Sunday night and I had it Thursday thank you


Just received the trailer light and in record time. eTrailer makes it so simple to shop online but are always there with knowledgeable staff to answer questions. I'll continue to use them.


Looked around the web for days for the "correct" replacement for a broken Four Winns trailer tail light, Stumbled upon etrailer whom which finally had the correct part. Perfect fit, perfect price! Thanks for an easy experience!!! ~Mark S.


This was exactly the light I needed for a replacement after I broke the original on a Nitro trailer. The website and ordering were easy to use. It was quickly shipped and I received it quicker than anticipated!


Great service, quick shipping...excellent experience. Thanks etrailer


Extremely satisfied. Great product and excellent service. Continuously updated on location of product during shipping. Will definitely order from here again.


Exact part


Love these lights


easy installation work great very bright


Great price, very bright , still working no problem at all


Excellent product! Perfect match for my DAMAGED light


Light was exact match and service as always was great.



No complaints. Happy with purchase


Great product!

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Info for this part was:

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Employee Amy B
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