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Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber

Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber

Item # MC42AB
Our Price: $4.23
Trailer Lights
Shipping Weight: 0.13 lbs
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4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent Great Prices for the best trailer lights from Optronics. Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber part number MC42AB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (250)
  • Q & A (0)
  • Photos

Optronics Trailer Lights - MC42AB

  • Clearance Lights
  • Rectangle
  • Incandescent Light
  • Amber
  • 4-1/16L x 2-1/8W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Non-Submersible Lights
  • Optronics

4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent

Double-Bullseye Trailer Clearance and Side Marker Light, Two-Bulb - Amber

This double bullseye light can be used as a clearance or marker light. The dual-bulb, amber light measures 4-1/16" long x 2-1/8" wide x 1-1/8" deep. The molded plastic housing and durable lens provide all-weather protection against corrosion. The two-bulb design greatly increases the light output. The light features a replaceable, snap-on lens on a black plastic base and easy-to-replace bulbs. The light mounts on standard 3" centers. The light contains a single lead wire for power and is grounded through the mounting hardware.

  • Amber light functions as clearance, side marker light
  • Weather and corrosion resistant
  • Dual bulbs increase light output
  • Single-wire design grounds through mounting hardware
  • Surface mounts on 3" centers
  • Dimensions: 4-1/16" L x 2-1/8" W x 1-1/8" D
  • Replaceable lens and bulb

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # ML2040A
Wesbar # 3440/3444
Truck Lite # 26302Y
Grote # 46793
Peterson # 138A

Manufacturer Specifications

Dual bulb, bullseye marker or clearance light with black base. Two-bulb design optimizes light output. Features snap-on, replaceable lens and easy to change replaceable bulbs. All-weather, molded plastic housing and durable lens protect against corrosion. Mounts on industry standard 3" centers. Grounds through mounting hardware.

dimensions of light

MC42AB Amber Double Bullseye Marker, Clearance Light by Optronics, Inc.

Alternate part number: MC-42AB

California residents: click here

Customer Reviews

Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber - MC42AB

Average Customer Rating:  4.8 out of 5 stars   (250 Customer Reviews)

4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent


Trailer Clearance Lights #MC42RB, easily installed, nice lights. There could be a little more space (maybe 1/8" in depth) on the backside so the wire could be positioned through an existing hole in the trailer and the light assy would sit completely flat against the trailer. Seems to be good value for the money and they are cheap.

Wayne B.


Still working great after a year, good value.


Fast shipping, product was good. Easy mount. I am working on a gooseneck trailer trying to get it wired up. Still a work in progress, but these will help tremendously.

John N.


The lights are working fine, no problems at all. Very pleased.


I want to keep the original look of my Airstream and the Double Bullseye lights are a perfect very cost effective replacement They add a nice new fresh look and keep the vintage appeal. I replaced all the yellow and red lights for a fresh look.


Thanks again etrailer for a job well done. great clearance lights, fast delivery.
Third time ordering from etrailer and my experience as been perfect every time.


Wanted to add a few lights and fix broken fender lights on my trailer. you had a great product with a great price with fast shipping couldn't be happier. Just orderd brakes from you and I wiil do buisness again with you.

Very satisfied customer, thanks,


I was fixing up a vintage Shasta trailer that needed new lights and your products were just what I needed. Thank you very much for the great service.


Other companies would benefit to follow etrailer's practices of complete services to its customers. From pricing to installation...they seem to have it all. I've ordered several times and never have been disappointed.


Great replacement light. These light are very similar to what was on the vehicle. The vehicle is a restored " Mobile Man Cave" / race support vehicle (1979 E-350 box van). I also needed a little assistance from Customer support and Cathy was very helpful. Fantastic experience all the way around. Thanks.


I used these as they are a perfect replacement for 70s airstreams and they worked great- i assume they are still working great but a little bit ago i sold the trailer.


Good high visibility side marker lights at a great price.


Nothing but RAVE reviews for Parts were exactly as ordered, great price, fit perfectly. Couldn't be more elated with the fast service too!


Fast service. Just the perfect replacement light for my trailer.


A very nice look light.You cant go wrong with 2 light.With the money I saved ,I will pop in some LED lights


Replaced 40 year old clearance lights with this item. Working great after one year. Very well pleased.


Quality lighting used on my 1978 Mack Sleeper restoration. GREAT quality and pricing. Looks just like oem


Great place to get trailer parts. Priced right & shipped right to my door


Lights were exactly what I was looking for... Fast delivery, good price, worth the money spent...Great quality lights..(trailer lights)


These were just what I was looking for, no more driving all over to find the right bulb for the others that thes replaced. Installation was easy. Just cut and splice




Great product. Easy to install and the cover doesnt crack with the sun ray .


good products & fast service I'll always check your site first when I need something.


Easy mounting, bright lights. Would purchase them again!


Work great


Very happy with all products


Great product great place to deal with

Dennis W.


Thank you for the concern, Everything I purchased from you are working as they should. VERY HAPPY with all.

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