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Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens
(1371 reviews)
Price: $7.37
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Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Red Lens
Part Number: MCL13R2B
$7.37
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Optronics Trailer Lights - MCL13R2B
Highlights
- Clear Visibility in Any Weather: Sonically sealed, waterproof housing keeps water out so light performance stays consistent.
- Low Power Draw: Only 0.046 amps at 12.8V means you can add multiple lights without overloading circuits.
- Fewer Bulb Changes: Long-lasting LEDs use less power and avoid filament breakage.
- Simple 2-Wire Hookup: Power and ground leads make installation quick on 12V DC setups.
- Compact Fit: 2-1/2" x 1-1/16" rectangle mounts easily with 1-7/8" hole spacing.
- Road Legal Lighting: DOT P2 rating ensures compliant clearance or side marker coverage.
Features to know about
Brighter and More Efficient Lighting: Dual-Diode LED Design
This compact 2-1/2" x 1-1/16" red marker light uses two LEDs that deliver a crisp, bright glow while drawing only 0.046 amps at 12.8V. That low current draw means you can even add multiple lights without worrying about overloading your wiring. The LEDs last up to 50 times longer than standard bulbs, so there’s no need to mess with replacements or deal with fragile filaments. It’s a clean, efficient upgrade that keeps your lighting system simple and reliable.
Protected From Water and Weather: Fully Submersible, Sealed Construction
If your trailer gets dunked or sees plenty of wet roads, this light is built to handle it. The red polycarbonate lens and housing are sonically sealed into one waterproof unit, keeping moisture out of the circuit board and diodes. That makes it a dependable pick for environments where other lights fail from corrosion or trapped water. Once mounted, it stays sealed and stays working—no foggy lenses or blown LEDs after a launch or rainstorm.
Simple Wiring for Clean Installs: Two-Wire Setup With 18-Gauge Leads
There’s no complicated wiring here—just connect the black power lead and the white ground wire, both made with durable 18-gauge wiring. Because it’s a surface-mount design, you can screw it directly onto the trailer frame using the 1-7/8" center-to-center mounting holes (hardware not included). The straightforward layout makes it easy to add or replace lights without rewiring an entire harness.
Clear Visibility Where You Need It: P2-Rated Beam Pattern
This P2-rated light throws a focused 90-degree beam pattern that’s visible straight on, providing clear signal visibility as either a clearance or side marker light when properly mounted. It’s DOT compliant and outputs from white LEDs behind a red lens for a clean, uniform appearance that meets safety standards while keeping your trailer visible in low light conditions.
Compact Durability in a Small Package: Polycarbonate Housing That Lasts
Even though it measures just 5/8" thick, the polycarbonate body is tough enough to hold its shape against impact and weathering. It’s a small but sturdy piece of gear built for long service life, backed by a lifetime warranty on the LEDs so you can count on consistent performance every time you hit the road or ramp.
Specs
Dimensions
- Overall dimensions: 2-1/2" long x 1-1/16" wide x 5/8" thick
- Distance between mounting holes (center on center): 1-7/8"
Electrical
- Power draw at 12.8V: 0.046 amps
- Voltage: 12V DC electrical systems
- Wiring design: 2-wire design includes power lead and ground wire
- Wire gauge: 18 gauge power and ground wires
Lighting
- Light type: LED mini trailer light
- Function: Clearance light or side marker (when properly mounted)
- Lens color: Red lens over white LEDs
- Diodes: 2
- Rating: P2 rated, DOT compliant
Construction
- Mount type: Surface mount (hardware not included)
- Housing and lens: Durable polycarbonate; sonically sealed, waterproof, and submersible unit
- Design: Rectangular, sealed light unit
Warranty
- LED warranty: Lifetime warranty on LEDs
Manufacturer Cross Reference
- This light functions as an exact replacement for: Peterson M168R
MCL13R2B Optronics LED Mini Clearance or Side Marker Trailer Light - Submersible - 2 Diodes - Rectangle - Red Lens - P2 Rated
Alternate part number: MCL-13R2B
Customer Satisfaction Score:
100% were satisfied with this product
0% of customers were not satisfied
- Arrived Damaged
- Wrong item was ordered
Ratings & Reviews
4.8
1371 reviews
by:
Michael
10/06/2026
The light was exactly what I ordered. The wires were a good length. I received my order quickly. Thank you e-trailer.
by:
Lewis H.
06/13/2016
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.
by:
Michael
07/23/2025
excellent quality and excellent service, product arrived in one business day
Michael
7/24/2026
still love it, works every time I use the trailer
by:
Ben
09/05/2026
Works great, compact , rigid and bright
by:
Roger
09/10/2026
High quality, arrived quickly, perfect for my project. Thanks!
by:
Ghislain
05/29/2016
Awsome service and products those led lights are bright and look awsome looking forward to buy products again as I need them thanks
by:
Dean
07/08/2026
Fit perfectly in chrome gromet and work great.
by:
William
06/24/2024
Perfect for my identification lights on my trailer,working great
William
6/24/2025
Product still works and looks great on my boat trailer
by:
jeremy
09/03/2024
These lights are nice and bright. They look great, and were easy to install.
Jeremy
10/26/2025
Excellent product! One year later and still looks good and working great :
by:
Jason
05/14/2020
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!
by:
Bobby
03/16/2021
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.
Bobby
3/17/2022
Ive been using these for 2yrs now .Ive had 1 partial failure. IE: a few...Not all LEDs failed....It was exchanged 2 Orilies auto parts......They sell them too. No questions asked...Lifetime warranty. Ive equiped many..Many trailers with these....They are the ONLY ones I will use...75 of them on Boat trailers.
by:
Dave L
03/24/2015
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!
Dave L.
3/30/2016
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
by:
Marvin C
12/22/2016
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.
Marvin C.
8/12/2019
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.
by:
Mark
04/05/2023
Great light, has been submerged many times. Doesn’t leak at all. Very bright.
by:
Lee H.
12/23/2014
Great service, fast delivery, excellent product. Very bright, just what I wanted.
by:
William
04/23/2025
As advertised. Using as additional markers lights in ttailight in the twilight assembly
by:
Scott
12/22/2025
Fit the bill perfectly.
by:
John Spencer
06/02/2014
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.
John S.
6/2/2015
Works great, no problems whatsoever,Highly recommend them to friends.
by:
James
10/25/2016
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!
by:
Jeremy
12/18/2025
you guys are awesome always fast delivery
by:
Bobby
05/11/2018
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!
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!
by:
Steve C
10/23/2013
Excellent product, looks great on my trailer. More than fair price.
Steve C.
10/24/2014
Still love them and still going strong
by:
Chuck R
12/23/2016
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.
Every part was of great quality. Very good prices and fast shipping. I would
use them again for all my trailer needs.
by:
Fredjr
06/12/2017
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.
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.
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See what our Experts say about this Optronics Trailer Lights
- Availability of Gasket for MCL13 LED LightsHey Trevor, welcome back! Yes, there is. You can use the Foam Gasket for MCL13 Series LED Lights # A13G2B with both the red # MCL13R2B and amber # MCL13A2B lights. The gasket installs behind the light and is designed to provide a weathertight seal, so it would be a great addition for mounting these on the exterior of your enclosed trailer. Are you replacing existing clearance lights on the trailer, or adding these in new locations?
view full answer... - Availability of Optronics LED Clearance or Side Marker Light - Submersible in RedHey Dana, we do have the light you are looking for in red with the part # MCL95RB. Is this for a boat trailer?
view full answer... - Recommendation for LED Waterproof Corrosion Resistant Rescue Boat Trailer LightsSince your rescue boat trailer is 188 inches (15 feet 8-inches) tongue to tail and 89-1/2 inches (7-1/2 feet) width I recommend the following: I recommend Optronics right side LED trailer light # STL26RB and left side LED trailer light # STL27RB. They are waterproof and corrosion resistant and will mount to all surfaces. These work great with trailers over 80 inches wide. The left side has a built-in license plate light. The rear clearance and side marker red LED lights # MCL13R2B are...
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- Replacement Plastic Fender For Triton Boat Trailer With Clearance LightsIt sounds like you are needing a fender like the Fulton Single Axle Trailer Fender with Top and Side Steps # F008573. This step is designed to fit mounting brackets that are spread 28" apart. You can fit Amber # MCL13A2B and Red # MCL13R2B clearance lights on the fender. If you can send me an image of the good fender with measurements for the fender, mounting brackets and lights I can see if we have something that matches exactly what you have.
view full answer... - Replacement for Mini LED Clearance or Side Marker Trailer Lights MCL85AB and MCL85RB The Mini LED Clearance or Side Marker Trailer Lights like part # MCL85AB for amber are being discontinued by the manufacturer so instead of trying to find the red version and running into this issue again down the road, I recommend replacing them with a similar, updated design. The Optronics LED Mini Clearance or Side Marker Trailer Light part # MCL13R2B for red and Optronics LED Mini Clearance or Side Marker Trailer Light part # MCL13A2B for amber are what I recommend using for replacement....
view full answer... - Are Chrome Trim Rings and Foam Gaskets Reqired for Replacement Side Marker Lights for Boat TrailerThe polished chrome ring, # A13C2B, is not required for mounting the sealed mini side marker lights, # MCL13A2B and # MCL13R2B. This is decorative trim ring only. The foam gasket, # A13G2B, would be used if these lights are mounted on the outside of an enclosed trailer, to keep out water and road grime. The foam gasket also provides some cushioning that may increase the life of the side marker lights. For your boat trailer the foam gasket would not be required but might be a good idea...
view full answer... - Does the Optronics LED Mini Clearance or Side Marker Trailer Light Come with Clear LensYes, the Optronics LED Mini Clearance or Side Marker Trailer Light does come with a clear lens; part # MCL131RC210B for red or part # MCL13CA2B for amber bulbs.
view full answer... - Why Does The LED Trailer Clearance or Side Marker Light # 328-K-52 Have a Drain Hole? The LED Trailer Clearance or Side Marker Light # 328-K-52 has the openings as it is not designed to be a submersible light. While is is possible for water and moisture to get inside the lens the openings also allow for the moisture to get out. The hole is on the bottom as water is going to typically run down and not up into the lens unless it is completely submersed in water. We do have submersible lights like the Optronics # MCL13R2B which is fully sealed off. This will not offer a replacement...
view full answer... - What Gauge Wire is Optronics LED Mini Clearance or Side Marker Trailer LightThe Optronics LED Mini Clearance or Side Marker Trailer Light # MCL13R2B (Red Lens) and # MCL13A2B (Amber Lens) use 18 gauge wires on both their power and ground wire. I have added links to video reviews and installs of both lights for you to check out as well.
view full answer... - Replacement Bearing Kit Recommendation for 3,500 lb AxleThe correct bearing kit you'd need for a 3,500 lb axle is the part # BK2-100 which comes with bearings, seal, races and a cotter pin. The fender # CE18041ATB that you asked about would work just fine. The clearance lights # MCL13R2B and # MCL13A2B that you referenced will also work on these fenders but you'd need to drill holes in the fender to install them.
view full answer... - Recommended Mini LED Side Marker With Red LEDsWe sure do have a red Mini LED Side Marker you are looking for. The # MCL13R2B actually has 2 wires. The white wire is for a ground and should be attached to a clean bare metal surface using the attached ring terminal. The black wire attaches to the running light circuit in the trailer wiring.
view full answer... - Is There Red Version of Optronics Trailer Clearance Light MCL85ABThe red version of the # MCL85AB was the part MCL85RB which we no longer can get. The most similar replacement at this time would be the part # MCL13R2B.
view full answer... - Distance Between Mounting Holes on the # MCL13R2BThe mounting holes of the Sealed, Mini LED Side Marker # MCL13R2B are 2 inches apart.
view full answer...
- Availability of Clearance Light for Trailer that Uses a Power and a Ground LightYou could use the part # MCL95RB with a ground wire if you wanted to. All you would need to do is run the ground wire to the mounting stud of the light before you tighten it down. Or the part # MCL13R2B is a somewhat similar light that uses two wire for power and ground. It is also submersible.
view full answer... - Replacement LED Light Recommendations For TrailerFor a grommet mount red 2 inch clearance light I recommend part # MCL55R1224B. This light uses a 2-wire pigtail, part # A46PB for installation. If you need amber, you would order part # MCL55A1224B. Installed without a grommet, these lights measure 2 inches diameter x 1 inch deep. You can use the 2 inch grommet part # A54GB for this light for a flush mount. It would require a 2-5/16 inch mounting hole. The tail lights I recommend are the Optronics GLOLight LED Stop/Turn/Tail Light, part...
view full answer... - Running Lights For Small Cycle TrailerHi Michael; for running lights like you want to use it'd be best to use surface-mounted lights. Not sure if you want red or white, but for white you can use the Dragon's Eye LED Utility Marker Light # DG52530VP. For red you can use the Optronics LED Mini Clearance or Side Marker Trailer Light # MCL13R2B. These are both 2-wire designs, so simple ground and power, and you can place them wherever you need on the frame as they just screw on.
view full answer... - Can 20 LED Clearance Lamps Be Added To Trailer Without Overloading Tow Package Wiring on 2015 RamSince the clearance lights you're wanting to add are LED's, you have no worries. Each lamp draws only .046 of an amp at 12 volts. Multiply that by 20, and you have 0.92 amps which is less than an incandescent stop/tail/turn signal lamp would draw. This assumes that your trailer doesn't have and excessive amount of lighting currently.
view full answer... - What Voltage Does Optronics LED Mini Clearance or Side Marker Trailer Light # MCL13R2B UseThe Optronics LED Mini Clearance or Side Marker Trailer Light # MCL13R2B that you referenced was designed to be used on a 12 volt power system. If you power them with a lower voltage setup you might get them to function but you'll also shorten the lifespan of the light by a considerable amount.
view full answer... - Similar Red Version of the Optronics Clearance Light # MC30ABI wish Optronics had a red version of the part # MC30AB but at this time they do not. For a somewhat similar red clearance light that has mounts that are 2 inches on center we have the part # MCL13R2B which would be a great solution.
view full answer...
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Info for this part was:
Expert Research:
Mike L
Expert Research:
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Expert Research:
Jeffrey L
Written by:
Tyler C
Video Edited:
Patrick B
Video Edited:
Chris R
Installed by:
Shane H
Updated by:
Brian T
Video by:
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Lewis H.
1/18/2018
Its all still good after one year.