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Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

Item # MCL55AB
Our Price: $6.34
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Shipping Weight: 0.06 lbs
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MCL55AB - Round Optronics Clearance Lights
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2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens part number MCL55AB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (88)
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  • Videos (3)
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Optronics Trailer Lights - MCL55AB

  • Clearance Lights
  • Round
  • LED Light
  • Amber
  • 2 Inch Diameter
  • Recessed Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated.


  • LED trailer light functions as a clearance light or side marker light 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
  • Amber lens over white LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A54GB sold separately)
  • Accepts industry standard 2-prong plug
  • P2 rated


  • Dimensions: 2" diameter x 1" thick
  • Diodes: 3
  • Power draw at 12.8V: 0.06 amps
  • Lifetime warranty on LEDs

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # LED2000-4A
Truck Lite # 30250Y
Grote # 47113
Peterson # M164A
Maxxima # M30250Y
Custer # CPL2-A

Optronics MCL55 Series LED Marker Clearance 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.

MCL55AB Optronics 12V LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Round - Amber Lens - P2 Rated

Alternate part number: MCL-55AB

California residents: click here

Video of Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Optronics LED Trailer Clearance and Side Marker Light Installation - Big Tex Trailer

What's up, everybody It's AJ with Today we're gonna be checking out this Optronics three-diode side marker light. It's gonna have an amber lens on it, and we're gonna put it on this trailer. Let's check it out. The trailer we're gonna be working with today is this BigTex flatbed trailer. So we're gonna be putting it right here in place of our old one we wanted to replace.

It's gonna be a two inch diameter. You can see the amber lens and the three diodes there. Those are gonna shine through. It hooks up with the two plug, just like the one we removed. So just push it in there.

It's a snug pit. These can be submersible in water. They are DOT compliant. So if you are putting 'em on a boat trailer, you don't have to worry about water bothering them. So we'll get to this grommet, pushing it and push it into place, (plastic smacking) like that.

Turn the lights on. You can see the three diodes light up. The LEDs are coming through pretty clear. Now, this is on taillight function. So that's why they're lighting up.

Looking here at the corner, you can see it side by side with the old one we replaced. So this one is gonna be quite a bit brighter than the old one that was on there. Overall, I think it's gonna be an upgrade for your trailer. You can already see right here how much brighter it is than the existing lights, and that's LED and LED. If you we're to upgrade from incandescent, you'd see an even bigger difference because they're gonna be far brighter, and they're gonna last way longer. Well, I think that does it. Thanks for hanging out and hope this helped.

Customer Satisfaction Score:

Customer Reviews

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - MCL55AB

Average Customer Rating:  4.8 out of 5 stars   (88 Customer Reviews)

2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated.


Purchased LED lights to re-wire a 12-year old trailer. etrailer had all the lights/gaskets needed. Perfect fit to the original OEM lights.


All my trailer parts for a new build keep coming in from etrailer , my go to online store. Everything needed for building and maintaining trailer etrailer has. I have been dealing with etrailer for several years now and have never been disappointed.


Nice, bright and easy to install. A much needed upgrade from the incandescent bulbs. Makes my boat trailer look great!


Great job! Quick and inexpensive!


great price , easy install and looks great .


Excellent products. These lights work perfectly, are rugged and seem to last. The license plate lights are super bright so law enforcement have no problem reading the plate which avoids unnecessary stops. The lights are directs replacements as well so no modifications needed. Great products. I recommend etrailer to many of my friends and colleagues.


Great product, easy to install as a replacement of the original marker lights.

Bill M.


Working great. Much brighter than the old ones.


Great product. Not only do these replacement marker lights give my auto trailer an updated, or modern look they also greatly enhance its visability to others on the road. This is a huge safety improvement. They were also a snap to install, approximately 2 minutes each including clean up of the wiring connectors. I love them.


Have not yet had time to install the LED lighting items I recently purchased to refurbish my car trailer.
I will say however that the customer service I experienced from etrailer was bar none the best I've ever encountered.
Items received were correct and expertly packaged as well.
Thank you for the great experience!


Easy installation, connections cam PRE die-electric greased which was a nice bonus!

I did buy new grommets with these as well.

Bright and should last a lifetime!


I replaced my old incandescent trailer lights with these LED lights. everything fit and they are a lot brighter.


Great product and price and high speed delivery. Now if I only knew where the three tires and wheel were that I ordered from etrailer on the 21st were. And although showing in-stock on the order update document, they haven't shipped yet. Must be in the Bermuda Triangle.....


a little more involved install then I was anticipating, the 2 wire pig tail doesn't fit in the space behind the grommet, so I had to use a hole saw and cut out a piece of the fiber glass roof, looks good


The trailer lights from etrailer shipped fast and arrived comfortably packaged. They were a perfect replacement for my CAM Superline equipment trailers.


Ordered multiple LED trailer lights. As usual, etrailer had what I needed and shipped on time.


I have been very happy with all the purchases I have made at etrailer parts arrive on time and our what I expect i’d like to thank you and your staff for the service I provide


Product fit perfectly. The LED lights are brighter than the original making the trailer more visible


Great selection of products on their website. I bought these lights as replacements when my lenses cracked out. Fast shipping and great communication.


Shipped quickly. Product arrived in good condition, and follow up by etrailer is helpful. Products not installed yet but on the to do list now.


Dab of dielectric grease on connection would be nice.


The lights I ordered and the accessories came and where exactly what was needed.The poeple I talked to when I ordered where very helpful and courteous. I will be very comfortable dealing with them again.


Product worked as advertised and delivered on time. Lights super bright compared to old ones. Thanks!


Bought LED lights as replacements, installed all of them and checked the light, very nice.


Was just the exact part I needed and fit and works well. Easy ordering and has a lot of parts to choose from. When needed will definitely order from etrailer again.


Great products and always outstanding service from the etrailer group.

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Troubleshooting Clearance/Turn Signal Issues On a 2001 PJ Trailers 6" Channel Equipment Trailer
    The side marker lights on your 2001 PJ Trailers 6" Channel Equipment (CC) were only designed to be clearance lights. These lights are like the Optronics # MCL55AB and if you were to want to also have the clearance lights function with the turn signals the lights would have to be specifically designed to work as both like the GloLight # MCL121AK9PVG. You would also need a Converter # C56196 to separate the turn signals from the brake light functions. Currently we do not have any round recessed...
    view full answer...
  • Availability of Round Amber Trailer Lights with Weathertight Construction
    I do have some options for you, however there is not a round amber light available that is designed to work with the 2-Wire Pigtail Weathertight Plug # A42PMB that you referenced. This particular harness is made for certain Optronics red backup lights. Optronics does have a nice selection of round amber trailer lights available that feature a waterproof, submersible design that connect using the 2-Wire Pigtail # A46PB such as the LED # MCL55AB. This pigtail still offers an easy plug-in...
    view full answer...
  • How to Determine Correct 3,500 lb Axle For Trailer
    I'm not sure what parts you are referencing specifically, but if you just mean replacing your 3,500 lb axles, in order to choose the correct replacements for your trailer you will need to know the dimensions of your current axle's hub face to hub face and spring center to spring center; I have added a link below to a video which walks you through how to measure. We have a couple options for 3,500 lb axles, one that measures 89" hub face to hub face and another that measures 95" hub face...
    view full answer...
  • What Size Hole is Needed to Install the LED Trailer Clearance/Side Marker Light
    In order to install the LED Trailer Clearance/Side Marker Light part # MCL55AB you will need the Flush Mount 2" Round Grommet part # A54GB and the Right Angle 2-Wire Pigtail for Optronics Trailer Lights part # A46PB. Once you have acquired these items the rubber grommet will require a 2-5/16" diameter mounting hole to install. I have attached an installation video of the rubber grommet for you as well.
    view full answer...
  • Flush Mount Grommet and Wiring Pigtail for 2 Inch Clearance and Side Marker Lights
    The Sealed, 2" Round Trailer Clearance and Side Marker Light, Flush Mount - Amber # MC53AB or the LED # MCL55AB will use the 2" Round Grommet - Flush Mount - Open Back # A54GB for installation. You will also require the wiring pigtail # A46PB which will give you 6 inches lead.
    view full answer...
  • 2 and 4 Inch Diameter Trailer Lights, Grommets, and Harnesses
    I will be happy to help and give you some options. For 2 inch diameter red lights we have several options: # MC53RB (use grommet # A54GB and harness # A46PB) # MCL50RB (use grommet # A54GB and harness # A46PB) # MCL55RB (use grommet # A54GB and harness # A46PB) # MCL55R1224B (use grommet # A54GB and harness # A46PB) All in one option # MCL-50CRK # MCL155RB (use grommet # A54GB and harness # A46PB) For 2 inch diameter amber lights we also have several options: # MC53AB (use grommet #...
    view full answer...

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Info for this part was:

Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Andrew K
Installed by:
Andrew K
Employee Cole B
Installed by:
Cole B
Employee Tyler C
Written by:
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Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
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Brian T
Employee Jonathan Y
Video by:
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