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Replacement Side Marker Light Bulb # 194

Replacement Side Marker Light Bulb # 194

Item # A194B
Our Price: $4.40
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Shipping Weight: 0.01 lbs
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Optronics Trailer Lights - A194B
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Optronics Accessories and Parts - A194B

  • Trailer Lights
  • Light Bulbs
  • Optronics
  • Clear

Replacement Bulb by Optronics, Inc.

A194B Replacement bulb part #194

  • Works with LP31, LP41, LP51 and LP81 Series trailer license plate lights

A194 Replacement Light Bulb

Alternate part number: A-194

California residents: click here

Video of Replacement Side Marker Light Bulb # 194

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

Video Transcript for Optronics Replacement Side Marker Light Bulb Installation

Today on our trailer we're going to install, we'll replace this Side Marker light bulb from Optronics. That's Part # A194B. Along with working for Side Marker lights, it also works with LP31, LP41, LP51 and LP81 Series trailer license plate lights. As you see here our marker light on the side of our trailer is a 2-light bulb configuration. The one here on the left is working. The one here on the right is out, so we're going to go ahead and replace that light bulb. We'll just go ahead and pop our cover off and get that out of the way. We'll go ahead and turn our running light circuit off when we pull our bulb and put our new one in. So, we'll go ahead and take our old light bulb, pull it out of the socket, set that aside, bring in our new Optronics light bulb and plug it into the socket. We'll go ahead and take our lens cover, put it back into place and test our new light. As you see, a real quick replacement of that light and you're ready to hit the road. That'll do it for the replacement Side Marker light bulb, Part # A194B.


Customer Reviews

Replacement Side Marker Light Bulb # 194 - A194B

Average Customer Rating:  4.8 out of 5 stars   (187 Customer Reviews)


Was able to save money and time by buying a replacement side marker lens and bulb for my utility trailer. At local auto stores only complete assemblies were available.

etrailer was reasonably priced with quick delivery.


Unfortunity, the replacement is half the size of the original and thus very dim.


Order for my hard to find part was filled quickly and delivered on date stated. Very happy.

by: 04/28/2022

1/2 the order came cracked or shattered..just throw loose in a soft envelope..what could go wrong?

Etrailer Expert

Sierra K.


The replacements will be coming soon.


Fast efficient delivery!


I ordered bulbs and a lens for my trailer because you never know when you're going to need them. The prices were very reasonable and the they shipped within two days. Great service and price and if I need something for my trailers, I'll be back.


ordered these bulbs to fit the red an amber side marker lights I bought. They will come in handy when more of them burn out, as they have a tendency to do.

Charles P.


Theyre still on the utility trailer that I installed them on, working fine, and I am satisfied with the quality and function of the lights.


As a new RV owner, I was very happy to find this replacement bulb at a reasonable price. I ordered an extra to keep on hand as well. The product arrived in a timely fashion, was packaged well and fit perfectly. I will definitely use this site for research when I have needs in the future. Thank you!



This product is working perfectly. No problems!


Worked like a charm!


I searched the web for bulbs and found several vendors. etrailer was the least expensive and had the lowest shipping charge. My stuff arrived within 5 days as promised. Excellent service and just about anything you could ever need in stock. I will look nowhere else in the future. No need.

Bill E.


Still shining bright.


I appreciate the professionalism and integrity of the people at etrailer. In a recent order I placed I was delayed in thoroughly checking the contents of my order. I was still well within the 60 days. When I did look through the box I discovered I had not received an item. I'm thankful the company believed me and sent me the parts I had not received. I recommend etrailer and will shop with them again.


Perfect fit, works great


Have an older Storm trailer and needed to replace clearance lights and bulbs. I was surprised how easy it was to find exactly what I needed. The prices are great and delivery was very prompt. Was notified when product shipped and had a link to track package. I will definitely buy from here again.


Thank you for the service. I made an ordering mistake and got 14 light bulbs to go with 16 new marker light lenses. The lenses fit perfect. I ordered 8 red and 8 orange light lenses. What came to me was 9 orange and 7 red. I was able to save the best of the old red covers and pick up 2 light bulbs down the street. All is well. Thank You. Jeff


Etrailer had a lens and bulb i wasn't able to get locally. Price is reasonable, shipping was quick! Nice doing business with them!


I received excellent service on my order this item and some covers for the running lights on my RV. The parts worked perfectly and I am totally satisfied with doing business with


I always worry that I will not find "etrailer" in my search for trailer parts. And I have to watch my one time, I had neighbors named Taylor. I have in the past misspelled trailer. All the above being said................ANYTIME a trailer part is needed, my search ends with "etrailer"! They have it all at very reasonable prices. Very reasonable shipping. And excellent, meaning fast, delivery. Thank You etrailer!!!!!!


I found etrailer on line and what a find it was. They have everything we need to redo our modular home carriers. Excellent service and good pricing. We will continue to use etrailer as our main supplier of trailer parts. Thanks Jeff Vanatta Modular Steel Systems Bloomsburg Pa


I only received half the ordered quantity. And they can't seem to get my name correct. It's not John, but Joe.

Etrailer Expert

Jenny N.


I am sorry to hear that you are missing part of the order. I will have our customer service team reach out to you. I have also manually updated the name to Joe in our system.


The trailer bulbs did not fit well and I had to find replacements at an auto part store.

Etrailer Expert

Sierra K.


These only fit specific trailer license plate lights: LP31, LP41, LP51 and LP81 Series.


The shipping time was slow. In fact on another order I had made the shipping time was so long I ended up cancelling the order.


The product selection is great! Easy to navigate their site. Products arrived very quickly... like the next day! I found what I needed to repair hail-damaged marker lights on my 2010 enclosed trailer. I highly recommend etrailer


Replacement bulb is exactly what i needed to replace non working bulbs on my toy hauler. Thank you etrailer.


The lights and lenses that I ordered were exactly what I needed. Jenny could not have been more helpful and professional on the phone. She was even able to expedite my shipment and have it shipped out the same day as I had requested since the trailer we were repairing was headed West. Thank you again for making it so easy to do business.


Instant response following the order confirming they received it, followed up with shipping info and tracking when shipped and received it ahead of scheduled delivery! Will only use etrailer for my trailer needs.


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