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Ultimate Overview of the Optronics Trailer Tail Light Video

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Leah B
Edited By:
Leah B

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Products Featured in this Video


Optronics Trailer Tail Light - Stop, Turn, Tail, License - Round - Red Lens - Driver Side


Optronics Trailer Lights

2670 reviews


Code: ST21RS

Retail: $11.26

Price:  $11.12
  • Trailer Lights
  • Tail Lights
  • Brake/Tail/Turn
  • License Plate
  • Round
  • Surface Mount
  • Non-Submersible Lights
  • Incandescent Light
  • 3-7/8 Inch Diameter
  • Red
  • Optronics



3-7/8" Diameter round. Incandescent trailer light serves 4 functions: stop, turn, tail, and license plate light. Screw-on lens. Durable steel housing. Stud mount to trailer with included studs. 2-Wire design. (1) 1157 bulb.


Do you have a question about part ST21RS?more information >     


Review of Optronics Trailer Lights ST21RS


Today, we're going to be reviewing Part Number ST21RS. This is the Optronics Trailer Light for the driver side. The round trailer light is going to serve as your brake light, turn signal, and tail light. It's got the built-in license plate light as well. It's got the red, acrylic lens. It's very simple to replace.… see more >