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Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens

Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens

Item # MCL13R2B
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MCL13R2B - Rear Clearance,Side Marker Optronics Trailer Lights
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2-1/2" x 1-1/16" Rectangle. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated. Lowest Prices for the best trailer lights from Optronics. Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens part number MCL13R2B can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (118)
  • Q & A (0)
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  • Why etrailer?

Optronics Trailer Lights - MCL13R2B

  • Clearance Lights
  • Rectangle
  • LED Light
  • Red
  • 2-1/2L x 1W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

2-1/2" x 1-1/16" Rectangle. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated.


  • Rectangular LED mini trailer light functions as a clearance light or a side marker when properly mounted
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 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 polycarbonate housing and lens
  • Red lens over white LEDs
  • Compatible with 12V DC electrical systems
  • Surface mounts to trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • DOT compliant
  • P2 rated


  • Dimensions: 2-1/2" long x 1-1/16" wide x 5/8" thick
  • Distance between mounting holes (center on center): 1-7/8"
  • Diodes: 2
  • Power draw at 12.8V: 0.046 amps
  • Lifetime warranty on LEDs

Manufacturer Cross Reference

  • This light functions as an exact replacement for:
    • Peterson M168R

Optronics MCL13 Series LED Clearance Marker Light Dimensions

Sonically 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 housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

P2-Rated Lights

Diagram of light spread for P2 rated light

A P2-rated light produces a 45-degree angle of light to either side of its centerline for a total of 90 degrees of coverage. This beam pattern can be seen straight on, but it cannot be seen clearly from the side. So this type of light can be used as either a side marker light or a clearance light, but it cannot function as both. If you need both functions, then you must install 2 separate lights on your trailer - one as a front or rear clearance light and one as a side marker light.

MCL13R2B Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Rectangle - Red Lens - P2 Rated

Alternate part number: MCL-13R2B

California residents: click here

Customer Reviews

Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens - MCL13R2B

Average Customer Rating:  4.9 out of 5 stars   (117 Customer Reviews)

2-1/2" x 1-1/16" Rectangle. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated.

- MCL13R2B

The lights and fenders I purchased from etrailer.com were first rate just as described. This was a rehab of an older trailer with rusted fenders and rotted floor & sideboards. The pictures show an extra bracket installed on the top of the fenders. While this may not look perfect, it truly makes the fender a rugged reliable step for a full size adult.

Its all still good after one year.
Lewis H - 01/18/2018

- MCL13R2B

All good, I received the parts that I ordered they were of fine quality. No complaints.

- MCL13R2B

Very Good lights..... On boat trailers run a separate Ground wire to them...Do not use the trailer frame as your ground. 90% of failed lights are Bad Grounds to the trailer frame.

- MCL13R2B

Great small marker light. Used them at extreme rear of trailer facing forward to show outer limits of trailer in mirrors at night. Very bright.....works great! Size allows mounting in tight spaces.

These lights are still mounted and working great. Well over 2 years and approximately 7500 miles later. Trailer is parked outside in sun, rain and snow. No lens fading and all the diodes are burning brightly. Great small marker light.
Marvin C - 08/12/2019

- MCL13R2B

My trailer sits low so these were a perfect addition as clearance/running lights for making me more visible at night. Great value and subtle brightness.

- MCL13R2B

Awsome service and products those led lights are bright and look awsome looking forward to buy products again as I need them thanks

- MCL13R2B

We use these lights here at Treeline Helicopters as indicator lights on our aerial tree saws, they are exactly as pictured and great quality, we’ve also used several heavy trailer products from etrailer and are very happy with the fast shipping and customer service!

- MCL13R2B

Lights came in last nite. I have a wells cargo double axle 6x12 trailer that I'm going to "spiff"up.im adding and replacing old marker lites and these mini LED lites with chrome trim were the answer! I will send you pics of before and after when they're mounted. Great looking lites and good price .

- MCL13R2B

Excellent products and excellent service. I never have to wait to receive parts from the fine people at etrailer and the quality is always excellent. My latest purchase, two pair of side marker LEDs installed easily and work perfectly. Thanks etrailer!

Thanks for asking. I havent had any problems with any of the products Ivereceived from eTrailer, ever. I have several trailers, all of them have someof your products on them and while I do check their operability before I geton the road with them, it is more about safety routine than concern thatIll have a problem.I think eTrailer is one of the best online stores period, I value yourbusiness and appreciate all of the excellent customer service you provide. Ispread the good word about eTrailer whenever I can. I appreciate yourfollow-up. It only reinforces my opinion that you all are tops in customerservice.Best Regards
Dave L - 03/30/2016

- MCL13R2B

Well Packaged, fast delivery, it's exactly what I ordered. If all the lights works, which have no doubts that it will when I hook it all up tomorrow then it will be money well spent and I will be a happy camper.

Works great, no problems whatsoever,Highly recommend them to friends.
John S - 06/02/2015

- MCL13R2B

Excellent product.....Been using these for 15yrs...on boat trailers.....Never a failure! Using the frame on a boat trailer is a big No No.....Most problems are Bad grounds....Run a separate Ground wire to your lights and waterproof the connections and your lights will last and function correctly!

- MCL13R2B

I bought red and amber LED marker lights and replaced all of the old corroded ones on my boat trailer. It didn't take long and they work great!

- MCL13R2B

I removed the old marker lights from my boat trailer and installed these LED lights a year ago. They are easy to install, very bright, and have worked great. I would definitely recommend this product.

- MCL13R2B

Great little light! Perfect size for a fender marker. Very bright for its size and seems to be well constructed. If mounting to a flat surface, be sure to drill a 1/4-inch hole in the center (of said flat surface) for the wires to pass thru or use standoffs behind the screws to prevent pinching of the wires as there is no slot on the back of the light itself.

- MCL13R2B

Super bright and easy to install.

- MCL13R2B

Great service, fast delivery, excellent product. Very bright, just what I wanted.

- MCL13R2B

Very well made running lights. Product is what it is for upgrading my boat trailer running lights. Etrailer has great product availability, very good and fair pricing and super service and fast shipping. The reasons I buy from etrailer whenever I need cargo and boat trailer parts.

- MCL13R2B

Installed lights on a hitch mounted motorcycle carrier for increased safety. Shipping was fast and affordable.

- MCL13R2B

I completely rebuilt my boat trailer and used a lot of parts from e trailer Every part was of great quality. Very good prices and fast shipping. I would use them again for all my trailer needs.

- MCL13R2B

the lights have worked well and I was very pleased. I installed the lights myself so you have to make sure you waterproof the connections but the lights have been underwater and managing quite well.

- MCL13R2B

Excellent light. I ordered 2 and installed them. Will have to give them some time going in and out of water to see how they hold up, but initially they are awesome.

- MCL13R2B

Easy to mount and connect, very bright, quick shipping

- MCL13R2B


- MCL13R2B

Great product ad fast shipping

- MCL13R2B

Low draw. Good visability. Sturdy.

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Info for this part was:

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Employee Jeffrey L
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Employee Tyler C
Written by:
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Employee Patrick B
Video Edited:
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