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Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens

Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens

Item # MCL44RB
Our Price: $11.05
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Shipping Weight: 0.11 lbs
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4" x 1-1/2" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens part number MCL44RB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL44RB

  • Clearance Lights
  • Rectangle
  • LED Light
  • Red
  • 4L x 1-1/2W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Non-Submersible Lights
  • Optronics

4" x 1-1/2" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated.


  • Rectangular LED trailer light functions as a clearance light or a side marker when properly mounted
  • Built-in reflex reflector removes the need for a separate reflector
  • 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 ABS housing and acrylic 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: 4" long x 1-1/2" tall x 15/16" deep
  • Distance between mounting holes (center on center): 3" apart on center
  • Diodes: 6
  • Power draw at 12.8V: 0.040 amps
  • Lifetime warranty on LEDs

Optronics MCL44 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.

MCL44RB Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Rectangle - Red Lens - P2 Rated

Alternate part number: MCL-44RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens - MCL44RB

Average Customer Rating:  4.8 out of 5 stars   (127 Customer Reviews)

4" x 1-1/2" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated.


I don't care for these because they are much dimmer than the lights that were being replaced. Also requires wiring modification so that the vehicle doesn't complain about the connection.


The marker lights were an exact fit and was an easy install.



Marker looks and works as well as when I installed it.


Exactly as described.


This used to be a 16 foot travel trailer. I stripped it down to the frame
and built it into a utility trailer using all lights and wiring from your
folks. Love to you use you as I get quick turn around on orders and good quality merchandise. Thank you.


These led marker lights lined up perfectly for my motor home and are nice and bright. I would recommend not having the lens installed on the body when shipped. Taking apart the light per the video left mars from my screwdriver no matter how careful I was, they are extremely tight.


Got replacement side lights for my Lance. They came really fast and are exactly what I needed.


Perfect replacement for globrite 118a/117r. Same size, fit,mounting holes. Great service. 6 diodes.


I replaced two failed incandescent marker lights on my RV with these LED units one year ago and they are working very well. They were a direct replacement and needed no modifications. Like all LEDS, they are best seen when looking directly at them (90ยบ) so be sure to choose your mounting location carefully.



The lights are working perfectly. I mounted them on a Lance truck camper to replace the faulty factory units. Thanks for inquiring.


I needed "clearance lights" for my six year old trailer. Looked all over Dallas and could not find an exact match for my 6 year old travel trailer. But then I found "" and an exact match at an excellent price!! Ordered the lights with three day shipping and the lights arrived on the second day!!! Exceeded expectations in every respect. is AWSOME!!!! Thank you!!!!!

Larry M.


No change. You guys are GREAT!!!!


I finally found the correct lights that match my trailer. Thank you


These are perfect replacements for the clearance lights on our RV trailer. They are bright, match to old footprint perfectly, and look even nicer. Every light works.

Brad B.


My comments still stand. I am happy with the purchases.


I selected the lights I did because they were LED, they were a size that matched the size of the red reflectors, and because of how bright they are. The LED trailer lights selected were used on the rear bumper of a G3500 Chev Express van where GM had placed red reflectors - above and toward the ends of the license plate. I wanted lights down low in addition to the factory tail lights which are high up the sides. The lights are great. I purchased extra lights in case someone kicks one of them and breaks the red plastic lens, or, to have a set for a new Chev van.


Have had no problems.


etrailer is my go to place for trailer parts. They do everything right. This light works great and is just what I was expecting. There was one minor problem. This light was the updated LED version of the 8 year old lights that came on my trailer. The lenses were even interchangeable after 8 years.This version has no room for the wires behind the surface mounted light and require a hole through the trailer body exactly where the wires exit the back of the light. This required hole is in a different place than the old lights and required drilling a new hole in the trailer. No big deal, but having enough room to house the wire in the back of the light would be more user friendly.


Product was exactly what I needed to replace my one year old clearance light on my travel trailer.

I've also purchased 2 electronic brake controllers and tech support told me exactly what harness I need each time.

I give 5 stars to Etrailer for everything I've purchased!


Prompt, outstanding service and I received exactly what I ordered. Will use this excellent company again.


LED running lights look and work much better than the original ones that came with our Casita travel trailer. Sealing external fixtures with 5200 sealant works and looks much better than silicone sealant and holds up well in all weather conditions.


Led trailer lights fit perfect, easy to install and arrived in a couple of days.
Lights are clear and bright and have had no issues since installed.


I bought several of these to replace lights on a camping trailer that had ceased to work. I replaced the lights and they continue to work well. I am satisfied with the purchase and the results.


Once again etrailer comes through! I needed a replacement clearance light for my Camplite TT and after scouring the web for my specific application, with no luck, the manufacturer told me to call etrailer. It had been awhile since I ordered from them, but after talking with their sales rep Sal, I was reminded of why their reputation for customer service and application expertise is so well established. Many thanks etrailer and Sal!


The LED side marker light worked perfect! Delivery was on time. Will order more to replace the old style bulb side lights on my RV.


Very good and bright lights.I purchased these lights to replace the bulb lights that were on my trailer and the difference is out standing. These lights were easy to install. The performance of these lights are great, their bright and add updated style to my 1997 Interstate Supercoach trailer. I am very pleased with the quality of these lights. I find the pricing to be very good in comparison to other LED lights I was considering to purchase. I am very pleased with my over all purchase.


My husband and I refurbished an older aluminum trailer. We ordered practically everything from etrailer. The lights were quality and service is always great.


Great price and fast shipping! Perfect replacement clearance light for my Casita Travel Trailer.


In my line of work we damage a lot of lights. Especially a light that sticks out from the frame of the trucks and trailers. This little light is strong and very easy to replace. Plus its amp draw is low so there is no need for a relay to prevent the truck light switch from burning up. This saves me time and maintenance on both the the trailers and trucks.

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Dimensions of the Rectangular LED Trailer Clearance Light part # MCL44RB
    The dimensions of the Rectangular LED Trailer Clearance, Side Marker Light with Reflector part # MCL44RB are 4 inches of length by 1-1/2 inches of width and a depth of 15/16 of an inch. The mounting holes are 3 inches apart when measured on bolt hole center. I attached a review video for this product for you to check out also.
    view full answer...
  • Mounting Method for Optronics Rectangular LED Trailer Clearance Side Marker Light MCL44RB
    The Optronics Rectangular LED Trailer Clearance, Side Marker Light # MCL44RB does not require a mounting plate or bracket since its white mounting base has two holes for screw-mounting to your trailer. Please see the linked image. These mounting holes are spaced at 3-inches on center.
    view full answer...
    Image 1 for
  • 2-Wire Red Clearance Light That is 4 Inches Long
    For a light that is similar to the Optronics MC44RB1 but has a 2-wire design you will need the following: - Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens # MCL44RB This is the same light, with exactly the same dimensions and mounting hole spacing as the MC44RB1, with the only differences being that this is an LED light instead of incandescent, and that it is a 2-wire light so it's exactly what you're looking for.
    view full answer...
  • Can Wiring be Rerouted Through a Hole Drilled in the Center of Optronics LED
    There is room inside the Optronics LED # MCL44RB to reroute the wires but not through the center divot like you're thinking. The circuit board with the diodes is right there and it's glued to the inside of the back housing. The hole you drill has to be outside of the box I've drawn on the back of the light. That box is basically where the circuit board is. With that being said, I don't remember drilling and moving the wires at all. The housing isn't designed to be modified and therefore...
    view full answer...
    Image 1 for
  • Replacement Clearance Lights and SAE Codes On Light Lenses
    The SAE codes on the lens of a light indicate what function(s) that light can perform. Many trailer lights are designed to do more than one function. Based on the SAE codes on the first light, it performs the following functions: A - Rear reflector and P2 - Rear side marker light. I've attached an article with more lighting requirements and information to assist. The best way to determine what you need is actually based on the measurements of your lights. I've linked the page to all...
    view full answer...
  • Can LED Side Marker Lights # MCL44AB and # MCL44RB be Used on a Class C RV and be Bright Enough
    Yes, you can use LED clearance lights # MCL44AB and # MCL44RB on your Class C RV. The LED lights will be as bright if not brighter than comparable incandescent lights. I have linked video reviews on both lights for you.
    view full answer...
  • Availability of Red Version of the Amber Clearance Light # MCL44AB
    Yes, the red version of the # MCL44AB is the part # MCL44RB.
    view full answer...
  • Replacement for GloBrige 118A/117R Amber LED Clearance Light on a 2014 Big Sky Montana
    To replace the right clearance light on your 2014 Big Sky Montana I recommend going with the Amber Optronics # MCL44AB. This isn't a "direct" replacement as this is a 2 wire design, but we actually have a customer review on this product page saying that it is a perfect replacement for the GloBrite 118A/117R LED light that you referenced. I am not sure why your clearance light has 3 wires because a clearance light just carries 1 function. This means that you just need 2 wires; 1 for the...
    view full answer...
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  • Is Amber Side Marker Trailer Light, # MCL49AB, Available In Red
    The Sealed, Rectangular LED Trailer Clearance and Side Marker Light, 14 Diodes - Amber, # MCL49AB, is also available in red as # MCL49RB. We do have several red marker lights as well that are close in size and shape. Take a look at Rectangular LED Trailer Clearance, Side Marker Light with Reflector, 2 Wire, 6 Diode - Red, # MCL44RB and # MCL44RB1. These lights are 4 inches wide by 15/16 inches deep by 1-1/2 inches tall. If you need a specific replacement, look for a serial or model number...
    view full answer...
  • Replacement Red Lens for Trailer Clearance Light with SAE P 2A 01 On the Lens
    The numbers on the lens indicate how the light is rated. LED clearance light # MCL44RB does have the same numbers on the lens meaning it carries the same rating. It is likely going to work for you but to be sure take a look at the measurements and compare them to your existing light to make sure they are compatible. Light # MCL44RB is 4 inches long, 1-1/2 inches wide, and 15/15 inches deep. I have linked a video review of this light for you. If you just want the lens then it is # A44RB.
    view full answer...
  • Red Clearance Lights For A 2021 Northwood Nash Travel Trailer
    We have what you are looking for. Depending on the style you currently have you have some choices. Just depends on what size and bulb type you need. We have the Optronics LED Trailer Clearance or Side Marker Light w/ Reflector - 6 Diodes - Rectangle - Red Lens # MCL44RB1 with a single wire. Or the Optronics Trailer Clearance or Side Marker Light w/ Reflex Reflector - Incandescent - Red Lens # MC44RB that is a double wire hook up. Or we have the LED Clearance or Side Marker Light with...
    view full answer...
  • Availability of LED Version of Optronics Clearance Light # MC44RB
    For an LED version of the part # MC44RB we have the part # MCL44RB1 which matches the dimensions you referenced.
    view full answer...
  • Recommendation for Sealed Clearance Lights to Replace Corroded Assemblies on Trailer
    To replace your existing Optronics # MCL44RB and # MCL44AB1 Clearance Lights with sealed alternatives, I recommend taking a look at the Optronics Sealed LED Trailer Clearance Light - Amber # MCL49AB and Red # MCL49RB. These feature a bit of a different shape than the standard rectangle of your existing assemblies, but they do have very similar dimensions, along with the same 3 inch mounting hole measurement. The lights themselves measure 3-7/8 inches long, 2 inches wide, and 1 inch deep....
    view full answer...
    Image 1 for Image 2 for
  • Replacement Red Trailer Clearance Light for 2007 Revolution RV Glo Brite 446A
    We don't carry just a lens replacement for the Glo Brite 446 but we have the very similar Optronics LED light replacement part # MCL44RB1 for a red replacement that would work well! It's an LED and priced great too so it would be an easy solution.
    view full answer...
  • Installing Trailer Marker Light With Two Black Wires
    You'd simply attach one wire to power from the taillight circuit, the other should ground to the trailer frame. I'd look closely at that wires to see if one has a white stripe indicating ground.
    view full answer...
  • How to Determine if Replacement Lens A44AB or A44RB Will Fit
    I searched but could not find any specific lights for a 1998 Trails West trailer; that said, it is pretty easy to determine if the correct replacement lenses are the Replacement Lens - Amber # A44AB and Red # A44RB. The easiest way, of course, would be if you happen to know what Optronics series light you have as these are direct replacements for MC44 Series and BA44 Series. That's not something most people know though, so the other thing you can do is take a measurement. Your current...
    view full answer...
  • Replacement Single Wire Trailer Lights that Measure 4 by 1-1/4 Inches
    We have a couple of lights that are just like that. We have a red clearance light, # MCL44RB1, and an amber clearance light, # MCL44AB1. Both are single wire LED lights that measure 4 by 1-1/4 by 15/16 inches.
    view full answer...
  • Red Version of Amber Clearance Light # MCL44AB1
    Yes, we have the red version of the # MCL44AB1 as part # MCL44RB1.
    view full answer...
  • Can Clearance Lights be Added to Fulton Trailer Fenders # F008573
    While the Fulton trailer fender part # F008573 doesn't have cut outs or provisions for clearance lights you could surface mount some like you mentioned. Like with the amber Optronics light part # MCL44AB and red # MCL44RB.
    view full answer...
  • Replacement Red and Amber Lenses for MC44 Series and BA44 Series Trailer Lights
    For just the replacement lens for the Optronics LED Trailer Clearance or Side Marker Light Red Lens item # MCL44RB1 you will want the Replacement Red Lens for MC44 Series and BA44 Series Trailer Lights item # A44RB. For just the replacement lens for the Optronics LED Trailer Clearance and Side Marker Light item # MCL44AB1 you will want the Replacement Amber Lens for MC44 Series and BA44 Series Trailer Lights item # A44AB.
    view full answer...
  • Replacement LED Marker Lights for a 2009 Timberlodge Camper
    Thanks for providing the picture. It looks like your current marker light is around 3 3/4" long and 1 1/2"- 2" wide and has mounting holes 3" apart. While we don't have anything in those exact dimensions, we do have several that are slightly larger so when you replace yours you will be able to completely cover the space the old lights used to be. I am slightly concerned about the width of your current light and how it fits in the groves on the side of your camper. I am going to recommend...
    view full answer...
    Image 1 for
  • Replacement Housings For The GloLight 118a And 117r Trailer Clearance Lights
    We have both the replacement lens and assemblies for the GloLight 118a and GloLight 117r trailer clearance lights. They are available in both an incandescent part # MC44AB and an LED part # MCL44AB1 bulb for the amber lights. For the red lights, you will need part # MC44RB for the incandescent bulbs and part # MCL44RB for the LED version. The replacement lens assemblies for the amber housings is part # A44AB whereas the replacement lens for the red housings is part # A44RB.
    view full answer...
  • Replacement LED-Type Rectangular Red Clearance Light for 2001 Newmar RV
    Based on my research the Hamsar 99063 is an LED-type clearance/marker light with a red lens that is roughly rectangular in shape. We do not carry this brand but we do have an extensive range of trailer lighting that meets these same general characteristics, LED operation, rectangular with a red lens. All are shown on the linked page. These include items such as # MCL32RBB and # MCL44RB1. These do not exactly match your specified dimensions but they are close.
    view full answer...
  • How Does Bargman 99 Series Trailer Light # 3499001 Ground to Trailer
    The trailer clearance/marker light you referenced, Bargman 99 Series # 3499001, grounds through one of the two wire connections made at its rear surface receptacles. The mounting screws for the white base portion do not make any electrical connections. You can attach a ground wire between the light and a rust-free bare metal surface on the trailer, such as one of the mounting holes, to establish your ground connection. For a light that grounds through its mount you could use # MCL44RB1...
    view full answer...

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