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Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens
Optronics

Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens

Part Number: MCL-91RK
In Stock
$13.53
Retail:$18.43
You Save: 27%
Trailer Lights
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2-1/2" x 1-3/16" Rectangle. Waterproof, LED trailer light serves as a side marker or clearance light when properly mounted. Chrome housing provides a finished look. Surface mount to trailer - hardware inclued. 1-Wire design. PC rated. Great Prices for the best trailer lights from Optronics. Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens part number MCL-91RK can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL-91RK

Highlights

  • Better Visibility, Less Power: 3 bright LEDs draw only 0.051 amps at 12.8V for efficient lighting.
  • Reliable In Any Weather: Sonically sealed, waterproof housing keeps out water and dirt.
  • One Light, Two Functions: Works as both a clearance and side marker light when properly mounted.
  • Easy, Clean Install: Surface-mount design with included hardware and single-wire ground hookup.
  • Compact Fit Anywhere: Thinline 2-1/2" x 1-3/16" size fits tight spaces with 2" hole spacing.
  • Polished Look: Chrome bezel gives a finished appearance that matches other trim.

Features to know about

Brighter, Longer-Lasting, and Efficient: LED Clearance and Side Marker Light

This Thinline LED light is a clean upgrade from old incandescent markers. It uses three white LEDs behind a red lens to give off a bright, even glow while drawing only 0.051 amps at 12.8V. The LEDs last up to 50 times longer than bulbs with filaments, so you won’t be wasting time swapping them out. It’s DOT compliant and PC rated, meaning it puts out a crisp 180-degree beam for better visibility from the front and side.

Tight Spots Made Simple: Low-Profile Thinline Design

When space is tight, this light fits where others won’t. At just 2-1/2" long x 1-3/16" tall x 7/8" thick, its low-profile Thinline Series shape gives you clearance without anything sticking out awkwardly. The chrome housing adds a clean finished look that blends in neatly once mounted. It’s a solid pick for anyone who wants a compact but capable light that still meets PC-rating visibility standards.

Worry-Free Water Protection: Fully Submersible and Sealed

If your trailer deals with wet conditions or even full submersion, this light is built for it. The housing and lens are sonically sealed into one waterproof unit that keeps out water and debris. That means no corrosion, no shorted diodes, and no fogged lenses—just reliable lighting every time you use it.

Quick Mounting Made Easy: 1-Wire Design and Included Hardware

Installation couldn’t be simpler. This surface-mount light uses included hardware and a single-wire setup that grounds through the mounting hardware itself. The 2" center-to-center hole spacing lines up easily for mounting, so you can replace an older light or add new ones with minimal effort. It’s a straightforward setup that works right the first time—no extra connectors or adapters needed.

Specs

Dimensions

  • Overall dimensions: 2-1/2" long x 1-3/16" tall x 7/8" thick
  • Distance between mounting holes (center on center): 2"

Dimensional diagram of Optronics MCL-91RK red Thinline LED clearance and side marker light with chrome bezel showing measurements and rectangular shape.

Electrical

  • Power draw at 12.8V: 0.051 amps
  • Voltage: 12V DC electrical systems

Lighting

  • Diodes: 3
  • Lens color: Red
  • LED color: White
  • PC rated: Yes
  • DOT compliant: Yes

Diagram showing the 180-degree light spread pattern of a PC-rated clearance and side marker LED light, illustrating 90-degree angles from the centerline.

  • 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.

Construction

  • Mount type: Surface mount to trailer with included hardware
  • Design: Single wire design grounds through mounting hardware
  • Housing: Chrome
  • Waterproof: Yes
  • Submersible: Yes
  • Series: Thinline Series

Warranty

  • Lifetime warranty on LEDs

MCL91RK Optronics Mini Thinline 12V LED Clearance and Side Marker Trailer Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens - PC Rated





Customer Satisfaction Score:

Ratings & Reviews

4.8

2627 reviews
5 Stars
(2356)
4 Stars
(188)
3 Stars
(38)
2 Stars
(18)
1 Star
(27)
Review sort icon
2-1/2" x 1-3/16" Rectangle. Waterproof, LED trailer light serves as a side marker or clearance light when properly mounted. Chrome housing provides a finished look. Surface mount to trailer - hardware inclued. 1-Wire design. PC rated.

by:

Good price, good quality



by:

Really great product. They make a good upgrade.



by:

Very bright and submersible! Mounted on PWC trailer.



by:

Easy install, much brighter than the old lights.



by:

Very happy with the lights I purchased. Being LED they are quit a bit brighter then the old ones that came with the trailer. Was very happy with Etrailer in the quality of the product and the quick turn around.



by:

Great service and prompt delivery

Les profile picture

Les

12/14/2019

Lower current draw and great visibility - love led lighting!!!



by:

Nice led lights look great



by:

Easy to install. Bright LEDs look great on my trailer.



by:

finding parts was a snap, replied to order immediately, tracking package was effortless arrived on time in excellant condition.
thanks
steve F.



by:

They fit and worked perfectly, Very bri ght.



by:

Great service and delivery. I was amazed at the assortment available. If you can't find it here you probably don't need it. I will recommend this site to anybody needing trailer components.



by:

Products always as advertised... Great company to buy from, with fast shipping service.



by:

Great product, great company. Fast serv ice.



by:

Brighter than old incandescent lights. Easy to install and all hardware was included. Sealed and submersible for marine trailer use.



by:

A very bright LED marker light for my boat trailer.



by:

These lights are well made and look great. They are a direct replacement for the older version I have. Tinted them to match the trailer. They were very easy to tint as the light surface is very flat.



by:

Very difficult to install....the positive wire breaks off when installing the actual led into the base...I had to solder the wire back onto the connector...no fun...but in the end..success



by:

Quick safe shipping and just what I needed, thanks for being the lowest cost.



by:

Great products! Fast shipping. Very satisfied. I have already installed them on my trailer. Thanks again



by:

These folks have the knowledge and expertise with great prices. They take the time to explain too. Like to see free shipping on the lower price items or coupons if possible. Will use again.



by:

Terrible push in connection. Had to use heat shrink to keep in place and protect. Very bright but I would purchase different item based on the connection.



by:

Good quality lights, installed easily enough. I used #8x3/4" flat head, self tapping screws as I thought the ones include were a bit too small. Be sure to drill the hole that your power wire runs through at an over size. Otherwise the power connector on the back of the light can ground out on the trailer frame, shorting out everything or over heating your wiring.



by:

I was very impressed with your customer service! I wasn't sure what to even call the part I was looking for but Conner Lund answered my confused email the next day and sent me a link to exactly what I needed. I ordered the lights the same day and they came today, 2 days later! It doesn't get much better than that! So thanks for everything. You guys are great!

Robin profile picture

Robin

2/18/2024

Completely satisfied! My husband installed the new light on our RoadTrek RV and we are now lit! As the kids say...



by:

I love the final look of these! Very bright and clear! However I needed to modify the chrome frame, cutting off the angle piece so that I could plug both connectors in fully, it wouldn't work otherwise. Also the tiny screws that came with it were a joke. I needed to substitute bolts, washers and lock nuts to secure it to my 1997 Shoreland'r Trailer.



by:

Exactly as described on the website. Shipping was pretty quick also. Thanks!


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