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

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

Item # MC53RB
Our Price: $3.66
Trailer Lights
Orders above $50 qualify for Free Shipping
Shipping Weight: 0.05 lbs
In Stock
MC53RB - Round Optronics Clearance 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. Lowest 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 or call 1-636-306-4830 for expert service.
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  • Reviews (183)
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Optronics Trailer Lights - MC53RB

  • Clearance Lights
  • Round
  • Incandescent Light
  • Red
  • 2 Inch Diameter
  • Recessed Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

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.


  • Round trailer light functions as either a side marker or clearance light when properly mounted
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Incandescent bulb can be easily replaced
  • Durable polycarbonate housing and lens
  • Red snap-on lens over incandescent bulb
  • Compatible with 12V DC electrical systems
  • Recessed mount with grommet (A54GB - sold separately)
  • Accepts industry standard 2-prong plug (A46PB or A86PB - sold separately)
  • DOT compliant
  • PC rated


  • Dimensions: 2" diameter x 11/16" thick
  • Bulb type: incandescent
  • Power draw at 12.8V: 0.2 amps
  • 3-Year warranty

Manufacturer Cross Reference

  • Light will work as an exact replacement for:
    • Uni Bond # SE2000R
    • Wesbar # 203221
    • Truck Lite # 30200R
    • Grote # 45822
    • Peterson # 146R
    • Bargman # 40-30-001

Optronics MC53 Series Red 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.

PC-Rated Lights

Diagram of light spread for PC rated 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. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.

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

Alternate part number: MC-53RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (183 Customer Reviews)

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.


Parts I need to keep trailers on the road. Competitive prices and shipped on time.


As ordered. Very nice


Matches OEM exactly! Just what I wanted to match other lights on trailer.


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

Still going strong! Great to know that etrailer is there when I need to find the right replacement parts
John W - 08/01/2021


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


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




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!!


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.


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


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


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.


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}


Exactly what I ordered and great service. They resolved an issue with a back order part and took great care of us!


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 again. Very happy.


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! Thanks etrailer!


Great Product - Fast Shipping


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.


I actually found everything I needed for lights and at a good price. Products were exactly as shown on the site. I will surely go to etrailer first for other products when I need them.


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.


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


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.


hitch parts ordered very nice part, lights same , very good price.always use because of price and service its the best


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.


Exact product replacement for Load Max and other major trailer manufacturers marker lights. Half the price and delivered to your door. etrailer even has LED versions if you like.

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