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Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens

Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens

Item # MC57AB

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MC57AB - Round Optronics Clearance Lights
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  • Clearance Lights
  • Round
  • Incandescent Light
  • Amber
  • Recessed Mount
  • 2-1/2 Inch Diameter
  • Submersible Lights
  • Optronics
2-1/2" Diameter round. Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Built-in reflex reflector. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated. Lowest Prices for the best trailer lights from Optronics. Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens part number MC57AB can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (41)
  • Q & A (11)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - MC57AB

2-1/2" Diameter round. Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Built-in reflex reflector. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated.


Features:

  • Round trailer light functions as either a side marker or clearance light when properly mounted
  • Built-in reflex reflector removes the need for a separate reflector
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Incandescent bulb can be easily replaced
  • Durable polycarbonate housing and lens
  • Amber snap-on lens over incandescent bulb
  • Compatible with 12V DC electrical systems
  • Recessed mount with grommet (A55GB or A56GB - both sold separately)
  • Accepts industry standard 2-prong plug (A46PB or A86PB - sold separately)
  • DOT compliant
  • P2 rated


Specs:

  • Dimensions: 2-1/2" 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 # SR2500A
Wesbar # 223223
Truck Lite # 10205Y
Grote # 45813
Peterson # 143A


Optronics MC57 Series 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.



MC57AB Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens - P2 Rated

Alternate part number: MC-57AB






California residents: click here


Video of Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Optronics Trailer Lights - Clearance Lights - MC57AB Review

Today we're going to be taking a look at part number MC57AB. This is the Optronics Sealed, 2-1/2" Round Trailer Clearance and Side Marker Light with a Built in Reflector. It's a 1 incandescent bulb design. It is PC rated, that means it can function as both a clearance and side marker light when mounted at a 45 degree angle. It's going to have the reflectorized lens. It's Department of Transportation complaint so that's going to eliminate the need for a separate reflector. It's also going to have this sealed, waterproof housing in the lens unit.

That's a great design to have. A heavy-duty long life incandescent bulb. This does require a mounting grommet that's going to be sold separately. That's available with part number A55GB. The mounting grommet is going to require a 3" diameter hole in order to get it mounted. Here on the back side it's got a 2-prong connection so it's going to accept the industry standard 2-prong plug.

That's going to be sold separately, and the mounting grommet is sold separately as well. The overall diameter of the light is going to give us a measurement of 2-1/2" and the depth is going to give us a measurement of about 11/16". We're going to go ahead and connect this to our external power supply that way you can see what it looks like it with power running to it. I have an industry standard 2-prong plug here, just to show you how easy it is to connect it. Simply line up the connection points and push it in. It snaps in there to create a nice weather tight connection.

This is what the light's going to look like when connected to power. Again it's going to have a 1 bulb design and that is an incandescent bulb. It's got the reflectorized lens. It allows a lot of light output to come through; it distributes it pretty evenly and it's going to provide a nice, consistent light for you. This is going to function as both a clearance and side marker light when mounted at a 45 degree angle. That's going to do it for today's review of part number MC57AB. This is the Sealed, 2-1/2" Round Trailer Light from Optronics.

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Customer Reviews

Optronics Trailer Clearance or Side Marker Light - Submersible - Incandescent - Round - Amber Lens - MC57AB

Average Customer Rating:  4.8 out of 5 stars   (41 Customer Reviews)

2-1/2" Diameter round. Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Built-in reflex reflector. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. P2 rated.

- MC57AB
by:

A+ 606240



- MC57AB
by:

Works great 582650



- MC57AB
by:

3 x cheaper than any other place online and better quality. Definitely buying from here now. 582306



- MC57AB
by:

this is a great product, original equiptment priced $15.00 lower than other suppliers. I received the light in a couple of days and will use etrailer again. thanks guys 543838



- MC57AB
by:

Works as expected. Grommet not included FYI. 513529



- MC57AB
by:

Exactly what I needed. The websites showed me the breakdown of the part (exact size measurements) and I was able to order the correct replacements that I needed. Shipping was also very fast. 496151



- MC57AB
by:

Product as described 486785



- MC57AB
by:

Good service and product was as describ ed. 472160



- MC57AB
by:

Broke one of my warning lights and stretched out the rubber grommets. Perfect fit and matched my existing lights like nothing ever happened. Awesome price and was delivered quickly. You have a customer for life thank you. 461616



- MC57AB
by:

Good product, in timely fashion for standard shipping, Thanks. 459656



- MC57AB
by:

A very good product and very fast shipping ! 451561



- MC57AB
by:

E trailer did a fantastic job. Before order: Technical support / help was excellent. Goal, conversion of a 1998 Floe snowmobile trailer from surge to electric brakes. Problem, due to time and corrosion, I could only supply partial part numbers, spindle diameter. etrailer did a fantastic job, researching, and getting me the correct part numbers, so I could order. Julie did a great job. She was very timely, communicated clearly and honestly, and just “kept me in the loop”. I received the order came on the projected date, complete and undamaged. Excellent. I would highly recommend etrailer, for your part needs. 439122



- MC57AB
by:

Great product at a great price. They fit perfect and I installed them in only a few minutes. 428287



- MC57AB
by:

The lights are fine but the 2 1/2" grommets are too small for PJ trailers. Had to reuse the old ones. 405819



- MC57AB
by:

Very good quality,,just like the OEM marker light that came on my trailer. 394810



- MC57AB
by:

Products came on time and were exactly as described. Great service and great quality. Willdo business with again. 355284



- MC57AB
by:

nice light works well 329986



- MC57AB
by:

Excellent service. 319512



- MC57AB
by:

Bought a few of these to carry in all vehicles just to keep us legal. Excellent price, excellent value. 304766



- MC57AB
by:

Worked great 297805



- MC57AB
by:

Excellent seller....and quick to send order. Exceptional to do business with...Thanks!!! 292053



- MC57AB
by:

Great part at a great price!! 278606



- MC57AB
by:

Received part in great time. Part looks just as good as original lamp 278459



- MC57AB
by:

Fair shipping cost, Great prices and quick delivery. 247628



- MC57AB
by:

Exactly what I needed. Fast shipping. T hanks 225561



- MC57AB
by:

Perfect replacement for a broken Marker Light, fits and works great. 214625



- MC57AB
by:

Matched Perfectly! 201482



- MC57AB
by:

Great service and price 189238



- MC57AB
by:

Equal to or better than the same lights available locally, but at half to 1/3 of the local prices. Even paying shipping I save a lot. Delivery with E-Trailer is always timely, too. 186572



- MC57AB
by:

Quality product. Was as advertised and shipping was very fast as usual. 179069



- MC57AB
by:

This is the replacement for what came from the factory. The lights are cheap and easy to replace. Just pop it out and unplug. etrailer was the first place I found this item. Always had good luck with etrailer. 162318



- MC57AB
by:

Very good price and fast delivery. I live in an area where it is almost impossible to find many of the things I need. Your company is just the ticket, Thanks 145570


Comments

I am still impressed with your units

Andy S - 08/14/2015

14257

- MC57AB
by:

Superb! 137794



- MC57AB
by:

I got this light in the mail, opened it, popped it in the rubber grommet plugged it in and my light problem was over. Great price for this light. My local auto part store wanted $7.95 for a 2" light. Great light,, great deal...Highly recommend. 137198



- MC57AB
by:

received as ordered 135257



- MC57AB
by:

Just what I needed to get my snowmobile trailer well lit again. 116896



- MC57AB
by:

Perfect replacement 112470



- MC57AB
by:

Best service I ever got!! Received my order much faster than expected. Everything worked perfect. 58645



- MC57AB
by:

Great prices and quick shipping 49111



- MC57AB
by:

Ordered lights for my skid steer trailer, was amazed how fast I recieved the product!! Got exactly what I ordered!! Very fast turn around. Thanks Kermit 45987



- MC57AB
by:

easy direct replacement 32495


41
41

Ask the Experts about this Optronics Trailer Lights
Do you have a question about this Trailer Light?


  • Can Optronics Sealed 2-1/2 Inch Light be Mounted in a 2-7/8 Inch Hole
  • In order to install this light, you will need a grommet to fit the hole. We have a grommet for a 2-25/32 hole, which is just under 2-7/8 as well as a grommet that fits a 3 inch hole. If you can re-measure the hole with something that has 16th inch or 32nd increments we can get a more accurate measure of the hole. If it is a 2-25/32 inch hole, you would use grommet # A57GB. If you find it is a 3 inch hole, you can use part # A55GB. Both of these grommets will work with the MC57AB.
    view full answer...

  • What Is Hole Size For Mounting 2 Inch Round Trailer Lights With Rubber Grommet
  • The item you selected, Sealed 2-1/2 Trailer Light, part # MC57AB, is a 2-1/2 inch light that will mount into a 3 inch hole using 2-1/2 inch grommet, part # A55GB. The hole size to mount a 2 inch round light flush mounted would be 2-5/16 inches. The grommet you would need for a 2 inch light would be 2 Inch Round Grommet, part # A54GB. If you are flush mounting your lights, the 2 inch light will sit inside the grommet. A 2 inch light similar to the one you selected is part # MC53AB. We...
    view full answer...

  • What Size Hole is Needed to Mount Optronics 2-1/2 Inch Side Marker Light with Reflector and Grommet
  • The Optronics Sealed 2-1/2 Inch Round Trailer Clearance, Side Marker Light # MC57AB along with the Round Grommet - Floush Mount # A55GB will require you to cut a 3 inch diameter mounting hole. You will also need the Right Angle 2-Wire Pigtail Plug # A46PB to pair with the female connection on the Optronics light. I have attached video reviews of these products for you to look at.
    view full answer...

  • Replacement Clearance Light with a Reflective Lens for a Horse Trailer
  • The Optronics light, MCL71AB, does not have a reflector in the lens. I made a short video that shows the light with the lens off. It would be a fairly water resistant light. A better option may be # MC35AB. It is about the same size and it has a reflector in the lens. It is not as low profile as the flush mount light you referenced. If you are not opposed to switching to round we have # MCL59AB or # MC57AB which has a reflector in the lens and can be flush mounted using harness #...
    view full answer...

  • What Size Hole Drilled to Install the Side Marker Light Part # MC57AB with Round Grommet # A55GB
  • The recommended grommet to go with the Side Marker Light Part # MC57AB that you referenced is the Round Grommet # A55GB which will require a 3 inch hole.
    view full answer...

  • Looking for Trailer Clearance/Marker Light to Replace Trucklite Model 10
  • According to my research, I have found that the Trucklite model 10 clearance/side marker light measures 2-1/2 inches in diameter. Because the Optronics # MC53AB measures 2 inches in diameter, it would not be a good replacement. The Optronics # MC57AB, with its 2-1/2 inch diameter, would be the correct replacement. If you need a mounting grommet, it is available as part # A55GB. The two pin wiring pigtail is also available as part # A46PB.
    view full answer...

  • What Size Hole Is Needed For Mounting Optronics Trailer Light, # MC57AB, In A Rubber Grommet
  • To mount the Optronics Trailer Light, # MC57AB, in a rubber grommet you would use the Optronics 2-1/2 Inch Round Grommet - Flush Mount, # A55GB. This grommet will require a 3 inch mounting hole. To mount the Optronics Miro-Flex, Sealed, 4 Inch Round, Stop/Turn/Tail Light Trailer Light, # STL23CCRB, in a rubber grommet you would use the Optronics Rubber Grommet for 4 Inch Round Trailer Tail Lights, # A45GB. This will require a 4-1/2 inch mounting hole.
    view full answer...

  • Marker Light to Replace Peterson 143 on 2007 Fleetwood Pop Up Camper
  • I did some research, and found that the Peterson 143 is a flush grommet mount lamp, not a flange mount. The lamp itself is 2-1/2 inches in diameter. The Optronics # MC57AB would be a comparable replacement. You'd also need a # A57GB grommet and a # A46PB pigtail. If the # MC57AB doesn't match your lamp, please send me a reply email with a photo of the lamp attached, and I'd be happy to try to find a replacement for you.
    view full answer...

  • Availability of Mounting Bracket for 2-1/2 Diameter Round Sealed Trailer Lights
  • We do indeed have a bracket designed for 2-1/2 inch diameter trailer lights, part # BK55BB. You would also need the rubber grommet, part # A57GB. The bracket and grommet would work with a 2-1/2 inch diameter lamps like part # MC57RB or # MC57AB.
    view full answer...

  • 2-1/2 Inch Amber Clearance Light Recommendation for Trailer
  • For an amber clearance light that is 2-1/2 inches in diameter that uses a grommet for installation you would want the part # MC57AB. For a grommet you would want the part # A55GB and then for a pigtail part # A46PB.
    view full answer...

  • Replacement Amber Clearance Light for Dutchman Kodiak
  • The lenses on clearance lights are not generally removable as they are often "sonically sealed" such as the Optronics Trailer Clearance or Side Marker Light # MC57AB; this means they are submersible. Instead of buying a light and taking the lens off I strongly recommend an LED Trailer Clearance or Side Marker Light w/ Reflex Reflector # MCL59AB for your Dutchman trailer because an LED is a far better, much longer lasting option. You only need to make sure your existing lights have the...
    view full answer...


Do you have a question about this Trailer Light?




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Info for this part was:

Expert Research:
Patrick B
Expert Research:
Jeff D
Expert Research:
Reno H
Expert Research:
Jameson C
Updated by:
Laura H
Installed by:
Cole B
Updated by:
Sarah W
Updated by:
Brian T

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