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Miro-Flex LED Clearance or Side Marker Light w/ Reflector - Submersible - 9 Diodes - Red Lens
Optronics

Miro-Flex LED Clearance or Side Marker Light w/ Reflector - Submersible - 9 Diodes - Red Lens

Part Number: MCL50RB
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$9.11
Retail:$17.14
You Save: 47%
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2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Miro-flex reflector increases light output. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Miro-Flex LED Clearance or Side Marker Light w/ Reflector - Submersible - 9 Diodes - Red Lens part number MCL50RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL50RB

Highlights

  • Long-Lasting Light: 9-diode LEDs last 50 times longer than bulbs and draw just 0.047 amps.
  • Reliable In Any Weather: Sonically sealed waterproof housing keeps water from damaging circuits.
  • One Light, Two Uses: Works as either a clearance or side marker light when properly mounted.
  • Brighter, Modern Look: Miro-Flex reflector boosts light output and gives a clean, updated style.
  • Quick, Clean Install: Fits recessed mounts with standard 2-prong plug and 2-inch grommet (sold separately).
  • Road Legal: DOT-compliant and P2-rated for proper light coverage and safety.

Features to know about

Brighter and More Efficient Lighting: 9-Diode Miro-Flex LED Design

Older incandescent lights just can’t match the performance of LEDs, and this 2" round Miro-Flex light shows why. It uses 9 diodes behind a red lens to deliver bright, even output while drawing only 0.047 amps at 12.8V. The faceted Miro-Flex reflector boosts the light’s visibility and gives it a clean, modern look. With LEDs that last about 50 times longer than standard bulbs, you can forget about filament failures and frequent replacements.

Optronics Miro-Flex 2-inch round red LED clearance or side marker light with nine diodes and reflective lens for trailers

Built for Harsh Conditions: Sonically Sealed, Waterproof Construction

Moisture and corrosion are no match for this light. The housing and acrylic lens are sonically sealed into a single waterproof unit, so water can’t seep in and damage the circuit board or LEDs. That makes it ideal for trailers that see rain, road spray, or even full submersion at the launch ramp. Once it’s installed, you can trust it to stay dry inside and keep shining.

Reliable Coverage for Safety: P2 Rated Beam Pattern

Visibility from the right angles keeps you safe on the road. This P2-rated light produces a 45-degree beam to either side of its centerline—90 degrees total. That focused pattern is perfect when you need a dedicated clearance or side marker light that’s easy to see straight on but not blinding from every direction. The setup meets DOT requirements so your trailer stays compliant and visible.

Simple Mounting: Recessed Fit with Standard Plug

Installation doesn’t get much easier. The light fits into a recessed grommet mount (A54GB sold separately) that secures it neatly in place. It accepts an industry-standard 2-prong plug, so wiring is straightforward with no splicing or special adapters needed. The full setup only needs about 2 inches of space behind the mounting surface, giving you flexibility in tight spots without sacrificing reliability.

Specs

Dimensions

  • Overall diameter: 2"
  • Thickness: 13/16"

Electrical

  • Power draw at 12.8V: 0.047 amps
  • Voltage compatibility: 12V DC systems

Lighting

  • Diodes: 9
  • Lens color: Red
  • Light type: LED
  • Rating: P2 rated
  • Compliance: DOT compliant

Construction

  • Housing material: ABS
  • Lens material: Acrylic
  • Mount type: Recessed mount with grommet (A54GB sold separately)
  • Connection type: Accepts industry standard 2-prong plug
  • Waterproof: Yes (sonically sealed)

Warranty

  • LED warranty: Lifetime warranty on LEDs

MCL50RB Optronics Miro-Flex LED Clearance or Side Marker Trailer Light w/ Reflector - Submersible - 9 Diodes - Round - Red Lens - P2 Rated

Alternate part number: MCL-50RB





Customer Satisfaction Score:

Ratings & Reviews

4.8

854 reviews
Review sort icon
2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Miro-flex reflector increases light output. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated.

by:

Worked as expected. Not only brighter than the original incandescent lights but the Optronics Miro-Flex product looks great even when not lit.



by:

These lights work great. Much brighter than the stock incandescent lights that I replaced.



by:

Ordered a replacement and spares just in case. Had 1 lose a couple leds but it was still working and bright. Overall still happy and no issues with the other 8 red ones on my trailer.



by:

Light is nice - Wasn't aware it was going to arrive WITHOUT the plug. Guess the project is on hold and I will be paying shipping costs again. Website should state this.



by:

Worked perfectly



by:

I put these puppies on my 2006 Blizzard snowmobile trailer, very bright and the 2 in grommets work great. Use some WD40 on the grommet so much easier to get in.



by:

exact replacement for gooseneck trailer.
thank
you



by:

nice looking product to dress up my 10 year old equipment trailer, these helped make it look more modern and the led lights rarely don't work.



by:

My trailer is loaded with Optronics lighting, there waterproof and bright and easy to mount with the installation rings, best on the market!



by:

I wanted to replace all the lights on my trailer to LED, found what I wanted and price and quick shipping made the purchase great.



by:

Changed my equipment trailer lights over to LED. I was able to get everything I needed plus quick shipping.



by:

Outstanding! I didn't use the product for it's intended purpose, but rather as a "third eye" stop light for my Jeep. Works perfect! Just what I wanted. I'm very glad I stepped up and purchased the pigtail and grommet. Without these two extra items, my project would have failed.



by:

Product was as described. I chose this product because of its ease of use and brightness when on. I consider the light upgrade a safety feature for my trailer. No more “ filament flickering” from rough road.



by:

I just installed 5 of these on my car trailer, replacing older incandescent lights. These are so much brighter! Great fit, easy to install. I haven’t had a chance to get them wet yet, but I’m sure they will hold up.



by:

Replaced old side marker lights on trailer really makes a difference in looks and bright light.



by:

I ordered a 2" LED clearance light for my 5th wheel because I could not find a suitable replacement locally. The service was excellent and the product better quality than the original. etrailer.com will be the first place I go in the future!



by:

I rated "good" only because of my application.
I
had 6 of these on back of my 1 ton flatbed 3 high and 3 low and for what I needed they where too bright. Working around the truck at night was blinding.
They certainly would make a trailer visible.

I went with the 4 Diode and they were PERFECT..

I " />


by:

A very nice light its bright and easy to install. Working with etrailer.com also has been great.

Don J. profile picture

Don J.

3/7/2018

After a year the lights are still looking and working great.



by:

I bought a set last year form another distributor and were to be watertight. The ones I bought from etrailer states waterproof and they are going on a boat trailer. We will see how well they work once I launch the boat and see if any water penetrated the inside of the light.



by:

I will be using thiese products on a trailer I am refurbishing to pull behind my trike. The only drawback I have noticed is that I wish the black grommets came with a touch a chrome, to dress up the application.

Dustin S. profile picture

Dustin S.

10/16/2014

Hello Ken - we do have a 2 round chrome trim ring for the grommet mount lights. The part is A55CB, and they would look great being pulled behind your trike!

Rachael H. profile picture
Etrailer Expert

Rachael H.

10/20/2014

Thanks for chiming in Ken. I have provided a link to the # A55CB below for reference.


by:

Look great over factory bulbs. Led is the way to go.



by:

Perfect replacement and still working



by:

I like it better the cone style it replaced, better visibility.



by:

Lights are brigh LED are more visible than the incandescent lights.



by:

Extra bright and exact fit.


25
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See what our Experts say about this Optronics Trailer Lights

  • Tip for Allowing Round Clearance Light to Fit into Grommet Easier
    Getting lights like the # MCL50RB to slip into the grommets can be difficult but one trick that works well is to put soap in the grommet to allow to slip in easier.
    view full answer...
  • Replacement Clear Marker Light For a Glo-Brite 9500c-88
    While we do not carry the Glo-Brite 9500c-88 you currently have, we do have a light that will work as a replacement for you. From the information I could find on your Glo-Brite 9500c-88, it measures 2" in diameter. For the clear light, you would want the Optronics Miro-Flex LED Utility Light # UCL50CB. This light measures 2" in diameter and should fit in your current grommet. You would also need the 2-Wire Pigtail for Optronics Trailer Lights # A46PB. If you want to replace the grommet...
    view full answer...
  • What is Hole Diameter Needed to Install Miro-Flex LED Clearance or Side Marker Light
    The grommet part # A54GB that you have with the light part # MCL50RB requires a hole diameter of 2-5/16 inches. So you'd need to cut a hole 2-5/16 inch in diameter and the grommet and light will slip right in and be secure.
    view full answer...
    Image 1 for
  • Replacement Round Amber, Round Red, And Oval Red LED Trailer Lights
    We do offer a similar P2 light that is LED. I recommend the GloLight LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Round - Amber Lens Item # MCL155AB. For the 30 series I recommend the Miro-Flex LED Clearance or Side Marker Light w/ Reflector - Submersible - 9 Diodes - Red Lens Item # MCL50RB. For the 60 series I recommend the ONE LED Trailer Tail Light with Weathertight Plug - Stop, Tail, Turn - Submersible - Oval - Red Lens Item # STL002RMB
    view full answer...
  • Replacement 2-1/2 Inch Round Marker Light on Triton Trailers Elite WCII Personal Watercraft Trailer
    I do not have a cross reference chart for Truck-Lite trailer lights, but we have several 2-1/2 inch round clearance lights that may work for you. I have attached a link that will take you to all of our 2 inch and 2-1/2 inch round trailer lights for you to check out. I have also linked a few LED and incandescent 2-1/2 inch round clearance lights for you to checkout below. The biggest difference between many of these lights is the depth of the lens. Most of the lights are either 11/16 inches...
    view full answer...
  • Tail Lights, Grommets and Wiring Needed For the Buyers Products Tail Light Mounting Box # 337LB383SL
    For the 6" oval hole in the Buyers Products Tail Light Mounting Box # 337LB383SL you will need the PVC Grommet # a70gb and a Optronics LED Trailer Tail Light # STL72RB. A 3-Wire Pigtail # A45PB is needed for connecting to the light. The 2" hole on the side will use the 2" Round Grommet # A54GB and Miro-Flex LED Clearance or Side Marker Light # MCL50RB. A 2-Wire Pigtail # A86PB is needed for connecting to this light.
    view full answer...
  • Polarity of Optronics Sealed Micro-Flex LED Trailer Side Marker # MCL50RB
    The Optronics Sealed Micro-Flex LED Trailer Side Marker # MCL50RB referenced in your question does have polarity, but the PL-10 Plug # A46PB that you also have is designed so that it can only be plugged in one way. This is essentially how you will know which way to plug the harness into the light. Since LEDs use diodes, if you were to somehow connect the harness backwards, the light simply would not work and you would just need to turn it around and plug it back in. On the harness itself,...
    view full answer...
  • Type of Lubricant Used to Remove Trailer Light from Grommet
    Typically, our installers are using WD-40, or something similar, when they reference using lubricant.
    view full answer...
  • Will the Miro-Flex, 2 Inch Round, LED Trailer Light, # MCL50RB, Fit an Enclosed Snowmobile Trailer
    If adding the Optronics light, # MCL50RB, you will need about 2 inches of space behind your existing light for it to fit. The reason is the Optronics light is deeper including the pigtail mounting surface and the pigtail, # A86PB. If you have at least 2 inches of clearance, then this light will fit in your existing 2 inch diameter hole with grommet # A54GB. Light # MCL55RB is not quite as deep at 1 inch overall, so that is another option for you.
    view full answer...
  • Availability of LED Amber and Red Clearance, Tail Lights, and Side Marker Trailer Lights
    The STL42RB does come in amber. It is # STL42AB. Use wiring harness # A45PB with it. For 2 inch diameter amber lights you can use # MCL50AB with # A49PB and # A54GB. For 2 inch diameter red lights you can use # MCL50RB with # A49PB and # A54GB. For amber teardrop lights, you may be able to use # CBL22AB. We also have a teardrop shape kit that you would use on the roof of a truck, # CB-15AK, but it is not LED. For red teardrop lights we also do not have an LED option but we do have the...
    view full answer...
  • Recommended Red Clearance Light to Match Amber Clearance Light
    I believe you are looking for the Sealed, Miro-Flex, 2" Round, LED Trailer Side Marker, Clearance or ID Light, 9 Diode - Red # MCL50RB to go along with the Sealed, Miro-Flex, 2" Round, LED Trailer Side Marker, Clearance or ID Light, 9 Diode - Amber # MCL50AB for your trailer. You will also want the Right Angle 2-Wire Pigtail for Optronics Trailer Lights - 2-Prong PL-10 Plug - 6" Lead # A46PB and the 2" Round Grommet - Flush Mount - Open Back # A54GB for this installation. Let me know...
    view full answer...
  • Recommended Miro-Flex Clearance Lights With Clear Lens For Trailer
    We do offer Miro-Flex lights with clear lens for your trailer, but none of the Miro-Flex lights we carry are round with clear lens. The lights I recommend with a clear lens are part # MCL-50CRK. These lights have 3 LED diodes and come with the plug and grommet needed to install. For a round 2 inch Miro-Flex light, we offer the amber light, part # MCL50AB and the red light, part # MCL50RB. To mount these lights you would need the rubber grommet, part # a54gb, and you would need either...
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Patrick B
Video Edited:
Patrick B
Employee Chris R
Video Edited:
Chris R
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T

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