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

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

Item # MCL31RB
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Trailer Lights MCL31RB - Red - Optronics
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4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated. Lowest Prices for the best trailer lights from Optronics. Optronics LED Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens part number MCL31RB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (85)
  • Q & A (30)
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  • Why etrailer?

Optronics Trailer Lights - MCL31RB

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

4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.


Features:

  • LED trailer light functions as a clearance light or side marker light 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 systems
  • Surface mount to trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • DOT compliant
  • P2 rated


Specs:

  • Dimensions: 4" long x 2-1/16" tall x 1" deep
  • Distance between mounting holes (center to center): 3"
  • Diodes: 6
  • Power draw at 12.8V: 0.040 amps
  • Lifetime warranty on LEDs


Optronics MCL31 Series Red LED Side Marker and Clearance Light with Reflex Diagram

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.



MCL31RB Optronics LED Clearance or Side Marker Trailer Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens - P2 Rated

Alternate part number: MCL-31RB




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Customer Reviews

Optronics LED Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens - MCL31RB

Average Customer Rating:  4.9 out of 5 stars   (85 Customer Reviews)

4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.

- MCL31RB
by:

I have made several purchases with etrailer and all have them have been right on the mark. Order form easy to use, delivery on time and always a decent product and follow up. I won't be shopping around in the future.... direct to etrailer and "git er done". 403592



- MCL31RB
by:

This is exactly what we wanted to replace the old incandescent trailer markers. We can always count on etrailer to have what we need in stock and we always receive it very quickly! 404445



- MCL31RB
by:

Perfect fit, fast shipment! 862449



- MCL31RB
by:

As advertised 850693



- MCL31RB
by:

Lights work great, very bright. Easy wire connect and mounting was a breeze. 849643



- MCL31RB
by:

Lights work great, no problems. Weren't bad to install. 829840



- MCL31RB
by:

What a great product Not only the lens is read the LED lights are red as well and extremely bright works amazing 818996



- MCL31RB
by:

Bought these to replace OEM lights on a View that were no longer available. They were easy to install and work great. 793462



- MCL31RB
by:

I think the product is exactly what I wanted. Now I have to check them out by installing them on my motor home. You have made my job easier as it matches the burned our units. Thanks again, These replace the clearance light on a 1990 Fleetwood motor home. 779553



- MCL31RB
by:

I think the product is exactly what I wanted. Now I have to check them out by installing them on my motor home. You have made my job easier as it matches the burned our units. Thanks again, 779547



- MCL31RB
by:

Good quality, great price 736715



- MCL31RB
by:

Exact replacement of the original traditional light. I was able to use the original mounting holes. I really like having the dedicated ground wire. 698574



- MCL31RB
by:

Quick easy install 683786



- MCL31RB
by:

Perfect replacement for my original. 641947



- MCL31RB
by:

Exact replacement for my old incadesant lights. 634664



- MCL31RB
by:

Great quality. Used on the side rail of utility trailer to bring lighting up to standards. 599393



- MCL31RB
by:

Easy install and bright marker light. I also used two on the top back side of my horse trailer as an extra turn signal and brake light. My existing turn signal and brake lights were really low on the trailer and these helped it become more visible when I was slowing down or turning. 597339



- MCL31RB
by:

Good light, really cheap/brittle plastic cover... It broke while installing... But the light is great LED light. Fair price for cheap light 595846



- MCL31RB
by:

good product 591789



- MCL31RB
by:

These are good lights with pretty secure covers. They work great and bolt up exactly where the old ones did. The only issue I saw was that the wires can easily get pinched when mounting these on a surface with a center hole. These seem to be designed for the wires to be routed out of the side or bottom of the light, not the back. No biggie though. 589753



- MCL31RB
by:

great 583388



- MCL31RB
by:

Product was exactly as shown in pictures and shipped in a timely manner. Very pleased with the lights. 578748



- MCL31RB
by:

These lights are just what was needed to replace old incandescent lights on a small camping trailer pulled behind a motorcycle. These are bright so as to be seen better by others because motorcycles are sometimes more difficult to see compared to larger vehicles and the LED lights are easer on the motorcycles electrical system. Shipping was prompted, the product is as described by etrailer and arrived in good condition. 576523



- MCL31RB
by:

Great products as always, arrived much quicker than expected 564953



- MCL31RB
by:

Great company, great products, Great se rvice 560309


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Ask the Experts about this Optronics Trailer Lights

  • Availability of Replacement Trailer Taillights Reflect-O-Lite SAE-P2-A-72
    For an exact replacement to what you sent in a picture of we have the part # MCL31RB for a red taillight and part # MCL31AB for an amber light.
    view full answer...
  • Clearance Light Replacement for Glo Brite 122-Y Lights on Trailer
    I have a solution I can provide for you but we do not carry the replacement lens you are looking for. The clearance light part # MCL31AB and # MCL31RB are very close in shape and dimension to the lights you are looking for. They are both 4 inches wide by 2 inches tall. The # MCL31AB is amber in color and the part # MCL31RB is red in color.
    view full answer...
  • Clearance Light Replacement for Glo Brite 122-Y Lights on Trailer
    I have a solution I can provide for you but we do not carry the replacement lens you are looking for. The clearance light part # MCL31AB and # MCL31RB are very close in shape and dimension to the lights you are looking for. They are both 4 inches wide by 2 inches tall. The # MCL31AB is amber in color and the part # MCL31RB is red in color.
    view full answer...
  • Replacement for Bargman 552 Oval Clearance Light
    According to my research, the Bargman 552 is an oval amber clearance light that measures 3 7/8" long x 1 7/8" wide x 7/8" tall. We do not have an exact replacement for this light but we do have something very close in the Oval LED Trailer Clearance Light part # MCL31RB for red lens and part # MCL31AB for amber lens. They measure 4" long x 2-1/16" wide x 1" tall and will be the best fit replacement we have for you. Please note that finding an exact replacement for old trailer lights...
    view full answer...
  • Replacement Trailer Clearance Light with 3 Inch Centers
    The best replacement clearance light we have for you is the Oval LED Trailer Clearance Light part # MCL31RB for red or part # MCL31AB for amber. This light measures 4" long x 2-1/16" wide x 1" deep and mounts on 3" centers. It has a wire for power and a wire for ground but it won't be much work at all to run the new ground wire. It features 6 LED diodes and has a reflective housing. I have attached review videos for you as well.
    view full answer...
  • Mounting Instructions for Optronics # MCL31RB LED Clearance/Marker Lights
    I'm assuming that you're speaking of the Optronics # MCL31RB side marker/clearance lamps. These lamps are designed to surface mount using machine or self tapping screws as shown in the photo I've provided for you. A gasket isn't available, but using a thin bead of # 0160297 silicone to prevent water from getting behind the lamp would be an excellent idea.
    view full answer...
  • Replacement Red Clearance Light LED 4 x 2 Inches
    For your replacement clearance light, I recommend the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Red # MCL31RB. This light is 4 inches by 2 inches and mounts on 3 inch centers as you requested. I've attached a couple videos of this light to assist.
    view full answer...
  • Replacement Lens Cover Recommendation for a Oval LED Trailer Clearance Light # MCL31RB
    Yes, the replacement lens you would want for your # MCL31RB is the part # A31RB.
    view full answer...
  • Replacement Clearance Lights for 2001 Dutchmen Travel Trailer
    It looks like you are needing replacement red clearance lights for the rear of your 2001 Dutchmen Travel Trailer. In order to choose replacement assemblies, I recommend taking a couple measurements on your existing units. Based on the picture you provided, something like the Optronics LED Trailer Clearance, Side Marker Light # MCL31RB might be an excellent replacement. This red, LED clearance light measures 4 inches long, 2-1/16 inches wide and 1 inch deep. It features a 2-wire design...
    view full answer...
  • Availability of a Oval Trailer Clearance Light with a Black Base
    The closest thing we have to a version of the Oval LED Trailer Clearance, Side Marker Light # MCL31RB that you referenced with a black base in an amber and red lens would be the Red Oblong Trailer Clearance, Side Marker Light # MC31RB and the Amber Oblong Trailer Clearance, Side Marker Light # MC31AB. Both these lights have black bases, but they have incandescent bulbs instead of LEDs.
    view full answer...
  • Can Additional Turn Signals Be Installed on the Sides of a Trailer
    As far as turn signals go; that we are aware of there are no restrictions that would prevent you from installing an additional blinker on the side of your trailer in red or amber. You would need to consult your local DOT for more info, but I would be surprised if there were restrictions that would prevent that. Especially since semi-truck trailers often have them. The easiest way to do this would be to use red lights since you could simply tap into the stop/turn circuit on either side...
    view full answer...
  • Installing Side Trailer Lights to Function as Turn Signals
    You can certainly install some additional lights on the side of your trailer to function as another turn signal. You can use a red LED light like the Optronics Oval # MCL31RB for this purpose and simply tap into the stop/turn circuit on either side of the trailer. Keep in mind that if your trailer has combined brake and turn signals (which most do), the lights will activate when the brakes are applied as well. If you want to separate the functions out so that they only illuminate with...
    view full answer...
  • Color Availability of the Optronics Oval LED Trailer Clearance Lights
    Yes we sure do. In order to get the Oval LED Trailer Clearance Light in red you would want to use part # MCL31RB.
    view full answer...
  • Replacement Red Trailer Marker Light for 2013 Trailer Star Boat Trailer
    I was not able to find specs for the marker lights supplied on your Trailer Star boat trailer but I was able to find several photos that show the red oval grommet-mount lights you refer to. There may be a part reference number on the back of the light housing; often this is printed rather than molded into the part. If you can find a part number you can search our site using that, but if its not available you can take a measurement of the actual opening (not the grommet, but the opening...
    view full answer...
  • Forest River LED Trailer Light Replacements
    For an LED version of the light you sent in a picture of you'd want the part # STL22RB with the grommet part # A70GB. I also attached an install video for this for you to check out as well. Since I am not totally sure what the other marker lights are we do have the LED part # MCL31RB which is 4 inch by 2 inch. For a standard roof vent to fit what you have currently we have the Ventline Ventadome kit part # V2094SP-30 which has a 12 volt fan in it. For interior lighting we have...
    view full answer...
  • Recommended Round Trailer Fender and Lights for 14 Inch Wheels on 2016 Forest River R-Pod Trailer
    No photo came through, so I did a little research on your trailer to attempt to get the missing visual. I recommend the CE Smith Single Axle Trailer Fender- 14" Wheels - Qty 1 # CE17900G for your 2016 Forest River R-Pod 180. It will need to be primed and painted black to match your trailer or powder coated like the original fender. You may want to consider the mounting brackets # CE26098G-2 if your mounts were damaged as well. For the marker lights, I don't know the size you need,...
    view full answer...
  • Replacement Red Clearance Light for 2012 Keystone Fuzion 5th Wheel Toy Hauler
    I reviewed photos of your 2012 Keystone Fuzion 5th Wheel toy hauler (one is linked) and based on those it looks like the red side light you need is Optronics Trailer Clearance or Side Marker LED Light # MCL32RB which measures 4 x 2 x 1-inch and which mounts on 3-inch centers. Other similar lights include LED model # MCL31RB and incandescent model # MC32RB. Trailer makers do not maintain specs for smaller items like lights so just check your overall light size and mounting hole spacing...
    view full answer...
  • Replacement Trailer Light Assembly to Replace Glo Brite # 122Y
    I have a solution I can provide for you but we do not carry the replacement lens you are looking for. The clearance light part # MCL31AB and # MCL31RB are very close in shape and dimension to the lights you are looking for. They are both 4 inches wide by 2 inches tall. The # MCL31AB is amber in color and the part # MCL31RB is red in color.
    view full answer...
  • Most Popular Replacement Clearance/Marker Lights for an Old Travel Trailer
    The most popular clearance/marker lights we offer are the Optronics Clearance or Side Marker Lights w/ Reflex Reflector. These are offered in both incandescent part # MC38AB for amber or part # MC38RB for red and LED part # MCL31AB for amber or part # MCL31RB for red. They have a two wire design so they are super easy to install. The white wire gets grounded and then the back wire goes to the running light circuit with butt connectors part # DW05744-5. If you need screws to attach the light...
    view full answer...
  • Replacemen Glo Brite Amber Clearance Lights for 2009 Sunseeker Trailer
    Based on my research, the Glo Brite clearance lights you currently have mounted to your trailer are very similar in shape and size to the Optronics LED Trailer Clearance Side Marker Light # MCL31AB. This is a very nice, LED amber light that measures 4 inches long, 2-1/16 inches wide, and 1 inch deep. It features a two-wire design and a white base surface that mounts on 3 inch centers. I recommend comparing these dimensions to your existing lights to ensure they will work as replacements....
    view full answer...
  • Clearance Light Replacement for Glo Brite 122-Y and 122 R Lights on Trailer
    I have a solution I can provide for you but we do not carry the replacement lens you are looking for. The clearance light part # MCL31AB and # MCL31RB are very close in shape and dimension to the lights you are looking for. They are both 4 inches wide by 2 inches tall. The # MCL31AB is amber in color and the part # MCL31RB is red in color.
    view full answer...
  • Recommended LED Marker Lights for Trailer Over 80 Inches Wide
    The Trailer Clearance or Side Marker Light w/ Reflex Reflector - LED - 3 Diodes - Red Lens - Black Base # MCL32RBB will have the room to hide wires. The amber lens # MC32ABB is an incandescent bulb. I believe you will want the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Amber # MCL31AB along with the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Red # MCL31RB. For the light bar, I recommend the Sealed, 3-Light Truck, Trailer...
    view full answer...
  • Comparing Optronics Aero Pro and Glolight Trailer Tail Lights
    There would be a noticeable difference if you had both the Aero Pro light # STL37RB and the Glolight, # STL117RB right next to each other. You would notice that the Glolight seams to actually sort of glow rather than just light up. This is due to the top and bottom bars that light up solid. Both lights are going to be plenty bright. Light # STL37RB has 23 diodes which will be very bright as you can see in the picture submitted by reviewer Becky P. She is using tail lights # STL37RB...
    view full answer...
  • Sealing Up Gaps between Trailer Lights and Trailer Body
    What you can do is get some foam from a craft store and make a gasket for each of the lights # MCL31AB and # MCL31RB. Or you can use silicon sealant such as # 0160297 or gasket maker such as # LT37464.
    view full answer...
  • Does Optronics # MC66RB Incandescent Trailer Clearance/ Side Market Lamp Include Bulbs
    The Optronics # MC66RB Trailer Clearance/Side Marker Light does indeed include bulbs. Optronics also offers a similar LED lamp, part # MCL31RB. LED lamps draw a fraction of the power of incandescent bulbs, and will last considerably longer.
    view full answer...
  • Availability of 2 inch x 4 inch Amber and Red 6 Diode LED Clearance Lights for Trailer
    We have just the lights that you are looking for! Optronics has their Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode in both Amber # MCL31AB and Red # MCL31RB. These lights are 6 diode LED clearance lights that measure 2-1/16 inches by 4 inches. They do come with 2 wires but one of them is a ground that you will attached to a bare metal surface on your trailer. The other wire will be connected to the appropriate wiring on your trailer that your old lights were...
    view full answer...
  • Is a Deeper Lens Available for the Optronics MC32 Series Clearance Light to Install LEDs
    We do not have a deeper lens for the Optronics MC32 series clearance lights, however we do have similar LED clearance lights that you may be interested in. Check out the Optronics LED Clearance Light, # MCL45RB or # MCL31RB. These lights have almost identical dimensions as the MC32 lights and will use the same mounting holes on the trailer.
    view full answer...
  • LED Lights Won't Work With Incandescent Clearance Marker Lights
    The issue is the different power draws from LED and incandescent lights; it can cause the LED light not to work as the voltage difference between the two hampers the connectivity. To remedy this you will need to install all LED marker or clearance lights. I couldn't find your order to determine the LED you purchased from us initially, so you will need to choose from the size you need like the 4" long x 2-1/16" tall Red Optronics LED Clearance or Side Marker Light # MCL31RB or the 2-1/2"...
    view full answer...
  • Recommendation For Tail light And Marker Light LED Upgrade
    Thanks for the information you sent. I did some research on your 1977 Great Divide Camper Trailer and have a few recommendations for you to consider. My recommendations are not exact matches but I believe they will work for you. For the tail light assembly, I recommend the Bargman Triple Tail Light, Item # 47-84-009. This light is 14-1/16 inches long x 6-15/16 inches wide x 1-1/4 inches thick. It is a recessed mount that has 2 red LED lights and 1 incandescent reverse light for...
    view full answer...
  • LED Replacements for Optronics Rectangular Trailer Clearance Lamp MC32RB
    We do not have an exact LED replacement for the incandescent side marker lamp you mentioned, part # MC32RB, but we have an alternative that is very close. Part # MCL31RB (red lens) and part # MCL31AB (amber lens) are shaped a bit differently than the lamp you referenced. They are also about an 1/8 of an inch wider and thinner in depth. The important dimension, the distance between the mounting holes, is still three inches, so you will be able to use the existing holes. If you click...
    view full answer...

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Info for this part was:

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Installed by:
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