bing tracking image
  1. Trailer Lights
  2. Optronics
  3. Clearance Lights
  4. Round
  5. Incandescent Light
  6. Amber
Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber

Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber

Item # MC52AB
Our Price: $2.71
You Save: 17%
Trailer Lights
Orders above $50 qualify for Free Shipping
Shipping Weight: 0.08 lbs
In Stock
Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber Incandescent Light MC52AB
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos


Need help with installation?
Locate installers near me
Great Prices for the best trailer lights from Optronics. Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber part number MC52AB can be ordered online at or call 1-636-306-4830 for expert service.
  • All Info
  • Reviews (17)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - MC52AB

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

Sealed, 2" Round Trailer Clearance and Side Marker Light, Flange Mount - Amber

This sealed, round light with flange can be used as a clearance or side marker light. The unit measures 2-15/16" in diameter by 13/16" deep. The amber lens and housing are one unit that is sonically sealed and waterproof, providing protection to the heavy-duty, long-life bulb. This is a recessed, flange mount light with three mounting holes spaced 2-1/4" apart on the circular housing. An industry standard, two-prong plug (sold separately) is used for the wiring connection, allowing for several available wiring options.

  • Amber, round light functions as clearance, side marker light
  • Sealed, waterproof housing and lens unit
  • Heavy-duty, long-life bulb
  • Flange mounts with three holes spaced on 2-1/4" centers
  • Accepts industry standard, 2-prong plug (sold separately) for many wiring options
  • Dimensions: 2-15/16" Diam x 1-3/16" D

Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 30221Y
Peterson # 146FA

Manufacturer Specifications

Round clearance and side marker light. Features sonically sealed, waterproof lens and housing in a single unit. Accepts industry standard, 2-prong plug. Requires mounting grommet and plug (sold separately)for complete installation.

dimensions of light

MC52AB Amber Sealed 2" Flange-Mount Round Side Marker and Clearance Light by Optronics, Inc.

Alternate part number: MC-52AB

California residents: click here

Video of Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber

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 - MC52AB Review

Today we're going to be taking a look at part number MC52AB. This is the sealed 2-inch round amber trailer clearance and side marker light from Optronics. It's going to feature a sealed, waterproof polycarbonate housing and lens. It's going to contain one heavy duty long-life incandescent bulb. It's a recessed flange mount that's going to mount with the three mounting holes. If we take a measurement, the distance we have between the holes, center on center, is going to be 2 and 1/4 of an inch. That's going to be the same distance between each set of holes.

Mounting hardware is not included. The size hole that you're going to need in order to get this to fit is going to give us a measurement of 2 and 1/4 of an inch in diameter, and so this would sit inside that hole, and then you would place in some screws to get it fully installed and secured. The flange itself is going to be made from a durable plastic material. It's designed to accept the industry standard two-prong plug. That's going to be sold separately. You can find it here on our website. Taking a look at the overall diameter, it's going to measure 2 and 15/16ths of an inch.

The overall depth is going to give us a measurement from the back of the housing to the outermost point of the lens, we're looking at about 1 inch. The power draw for this light is 0.2 amps at 12.8 volts, and it is Department of Transportation compliant. We're going to go ahead and hook it up to our external power source. That way you can see what it looks like with power running to it. I have a two-prong plug. It simply just goes in the female ports back here.

Push it in for a nice, tight connection. You can see here that this light sends out a really nice, consistent signal. Again, it's going to contain one heavy duty long-life incandescent bulb. The amber lens allows a lot of light to come through, and this light is completely sealed, with a nice waterproof design. That's going to do it for our review of part number MC52AB. This is the sealed 2-inch round amber trailer light from Optronics.


Customer Satisfaction Score:

Customer Reviews

Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount - Amber - MC52AB

Average Customer Rating:  4.9 out of 5 stars   (17 Customer Reviews)


So far so good !!!


Perfect fit for my 2006 ranger boat trailer and the best price I've seen. I bought two extra lights with no additional shipping cost.

Still working fine after a year.
Kevin - 06/12/2016


Lowest priced 2" marker I could find, they work great.
Need 3/16 rivets


Not an easy product to find but you had it in stock, quick turnaround and consistent updates on status of delivery. Very pleased and well done.


Great product and direct replacement


always great service and price


Exact product replacement, fast delivery great price.

Thank you.


very good product




Good price. Never defective.



I"m very satisfied with the product.


Great survive and good pricing.




Great as always!!!!




See what our Experts say about this Optronics Trailer Lights

  • 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...
  • 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 an Amber Trailer Light that has Parking and Turn Signal Lights In One for a Hot Rod
    I am sorry but at this time the only trailer lights that serve two or more functions are the tail lights. There are amber tail lights that provide running light and turn signal function (see link) but none that are as small as the 2 inch round side marker light, item # MC52AB. We do have the Sealed, 4 inch Round Trailer Turn Signal and Parking Light, Flush Mount - Amber, item # ST45AB, and the Sealed, 4 inch Round LED Trailer Turn Signal and Parking Light, Flange Mount, 10 Super Diode-Amber,...
    view full answer...

Do you have a question about this Trailer Light?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer light information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Laura H
Updated by:
Laura H
Employee Brian T
Updated by:
Brian T
Employee Cole B
Installed by:
Cole B

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-636-306-4830