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Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens
Optronics

Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens

Part Number: MC53RB
In Stock
$5.04
Trailer Lights
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2" Diameter round. Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Durable polycarbonate housing. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. PC rated. Great Prices for the best trailer lights from Optronics. Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens part number MC53RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MC53RB

Highlights

  • Keeps Working Underwater: Sonically sealed housing and lens stay watertight for submersible use.
  • Reliable Visibility: PC rating gives 180° coverage for clear side and front marker lighting.
  • Quick Power Connection: Accepts standard 2-prong plug for easy 12V hookup.
  • Built to Last: Durable polycarbonate housing resists cracks and wear.
  • Simple Flush Fit: Recessed mount installs with grommet (A54GB sold separately).
  • Road Legal: DOT compliant for safe, approved trailer lighting.

Features to know about

Reliable Illumination in Any Condition: Submersible and Sealed Design

If your trailer deals with rain, spray, or even full submersion, this light is built to handle it. The housing and lens are sonically sealed into a single waterproof unit, keeping water out and protecting the bulb from corrosion or failure. That makes it a strong choice for use anywhere moisture is a constant factor.

Better Visibility and Coverage: PC-Rated 180° Light Spread

Good visibility means safety on the road. This PC-rated clearance and side marker light shines at a 90-degree angle on each side of its centerline, giving you a full 180° of light coverage. When properly mounted, it can serve as both a side marker and clearance light, so other drivers can see your trailer clearly from the front, rear, or side.

Simple Wiring That Just Works: Standard 2-Prong Plug Connection

No need to guess at wiring—this light uses an industry-standard 2-prong connection that’s easy to plug in with pigtails like part # A46PB or # A86PB. It’s not polarity sensitive, so it works no matter which way you connect it. That means less hassle during installation and fewer wiring worries down the line.

Compact Fit for Clean Installs: Recessed Mount Setup

When space is tight or you want a streamlined look, this 2" round light mounts flush with a grommet (A54GB – sold separately). You’ll need a 2-5/16" cutout hole for the perfect fit. The result is a neat, low-profile setup that keeps your lights protected while maintaining a factory-finished appearance.

Durable Construction with Easy Maintenance: Replaceable Incandescent Bulb

Built with a tough polycarbonate housing and snap-on red lens, this light handles bumps and vibrations well. The incandescent bulb provides steady illumination at just 0.2 amps on 12.8V power and can be swapped out easily whenever needed—keeping things simple and dependable over years of use.

Specs

Dimensions

  • Overall diameter: 2"
  • Overall thickness: 11/16"

Dimensional diagram of Optronics MC53 Series round red trailer clearance and side marker light showing 2-inch diameter and thickness.

Electrical

  • Bulb type: incandescent
  • Power draw at 12.8V: 0.2 amps
  • Voltage compatibility: 12V DC

Construction

  • Housing material: polycarbonate
  • Lens: red snap-on lens over incandescent bulb
  • Waterproof rating: submersible, sonically sealed housing and lens
  • Mount type: recessed mount with grommet (A54GB – sold separately)
  • Connector type: accepts industry standard 2-prong plug (A46PB or A86PB – sold separately)
  • Certification: DOT compliant
  • Rating: PC rated

Diagram showing 180-degree light spread pattern of a PC-rated trailer clearance and side marker light.

  • A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage.

Warranty

  • Warranty period: 3-Year warranty

Manufacturer Cross Reference

  • Uni Bond #: SE2000R
  • Wesbar #: 203221
  • Truck Lite #: 30200R
  • Grote #: 45822
  • Peterson #: 146R
  • Bargman #: 40-30-001

MC53RB Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens - PC Rated

Alternate part number: MC-53RB





Customer Satisfaction Score:

Ratings & Reviews

4.9

2594 reviews
5 Stars
(2358)
4 Stars
(179)
3 Stars
(32)
2 Stars
(10)
1 Star
(15)
Review sort icon
2" Diameter round. Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Durable polycarbonate housing. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. PC rated.

by:

Purchased these for my trailer. These worked out great and look even better than thee old originals. Bought the grommets to go with them. Trailer looks and works awesome.



by:

I was easily able to locate the trailer lights I required on this excellent website. Delivery was fast and the product was excellent. Thank you!



by:

We needed to replace our boat trailer light. etrailer had exactly what we needed, good price, received it quickly. Will order from etrailer again.



by:

Very high quality side marker lights and corrosion inhibitor is already applied to the electrical contacts.
Nice price too!



by:

very nice unit. Just what I wanted. Both pieces are used as replacement units and both fit perfictly.
Shipping was better than expected,Fast and cheep.



by:

I received the package on the exact day that you said it would arrive. However, I have not gotten the items installed yet due to other projects under construction. The items purchased look exZActly like the old items, so if they all work, it will be great. They were ordered to replace items not working on an older Karavan snowmobile trailer, so as I said as long as the function, everything should be great. This goes for all of the lighjts ordered at this time.



by:

Very simple, had two lights out on my trailer, ordered two of these, easy installation and they are working fine.



by:

I will definitely order from etrailer again. Great prices, fast and inexpensive shipping.



by:

Good product, good price, great customer service.



by:

I ordered this as well as a few other trailer lights. Ask seem to be quality products. Was as advertised and shipping was very fast as usual.



by:

This company goes above and beyond to make sure customers # 1



by:

The 2" red marker lights were just as described and shipping was fast! I searched the internet for an affordable marker light and I chose to buy from etrailer.com! Thanks etrailer!



by:

Found trailer lights needed in a hurry. Prices were great and shipping was minimum. etrailer kept me informed about shipping. Correct parts received in less than a week. Great vendor.



by:

These products fit exactly as described. There are many lights manufactured so proper replacement simplifies the process. I found these at a reasonable price and perfect fit. This is a great supplier. I will use them again in the future.



by:

I have purchased from etrailer several times and I find the selection of parts very good

I think their attempt to help customers with video and a good tech department is very unique and beneficial

The quality of the lights I received is good but I do feel it was not the same quality as the original "Grote" brand lights my trailer came equipt with...
Also the quality of the rubber grommits was definitely thinner and not as robust as all the original grommits used on the trailer originally... these parts were made over seas and the oems were all American made...

This is not meant to be a "DONT BUY" I'm just stating the facts
the parts are not the same quality but the price was great and the parts did work just fine but just bear in mind there is a difference but for my used trailer rebuild they were just fine

the jacketed wire was top notch BTW

I would buy from etrailer and these same parts again



by:

Hello...I was very glad to see this item on your web-site. I was able to find the LED lamps every where but this is older technology and getting harder to find. I only had a few lights out on my trailer and I did not want to mix up the incandescent and LED nor did I want to change out all the lamps to LED due to the unnecessary expense. Please keep these in stock and do not discontinue them. I have told several of my friends where I found these because they also own older stock and other trailers. They work just great. Thanks!!!...(I have tried to check the "Excellent" box above but for some reason, I cannot get it to work}



by:

I purchased this light as my lens had cracked on my previous one (Grote). My rubber grommet was reused, and lens has a built in ring as a retainer. I pulled the wiring harness off the old light, pushed it onto the new, and pushed the whole works straight in until it sealed in the grommet, DONE!!
This product met my expectations in every way.



by:

I ordered lights for my snowmobile trailer and they showed up quicker than expect. Also received an email for a rep to tell me if there were any problems to let him know. There were not. The lights fit and worked perfectly. This company seems to be going out of its way to engage customer to ensure they're happy. My order was very small so this was a pleasant surprise. I have another trailer project I'm working on and plan to shop with etrailer.com again. Very happy.



by:

It fit perfectly and works well. The only problem was it took over 2 weeks to arrive. But etrailer is very communicative and helpful and I wasn’t in a hurry

John W. profile picture

John W.

8/1/2021

Still going strong! Great to know that etrailer is there when I need to find the right replacement parts



by:

In total, I purchased electric tongue jack, double roller for rear ramp door, vent cover, new backing plates (four) complete with electric brakes, new hubs and bearings.
This time wheel covers for two trailers and some lights for quad trailer.
I am very pleased with everyone involved with purchases and products.
I would recommend etrailer to anyone and have already done so to some friends!!
Thanks!!!



by:

Bought these lights for my trailer 1 year ago and they are working like a champ. These sealed lights are not expensive and no hassle. Unplug and plug in. Very simple.



by:

I have been trying to rebuild an old Big Tex trailer for the past month through local vendors. We needed springs, hardware, brakes, lights ect. We use this trailer for feeding cattle out on the range and the window was closing. Everytime I got a part from the local company it was wrong. Finally I found etrailer and everything was so simple to find myself and order. The service was outstanding and the delivery was a day ahead of schedule. I ordered all my suspension hardware and lights from them, it was quick and easy, quality looks great. Thank you



by:

Ordered bulbs for a CM Truck bed. Once again Perfect fit.



by:

Great Product - Fast Shipping
Thank
You
MadDogBurger



by:

Great quality parts, fast shipping and much less expensive even after shipping then local merchants


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