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Replacement Light Bulb # 1157
Optronics

Replacement Light Bulb # 1157

Part Number: A1157B
In Stock
$2.67
Accessories and Parts
Optronics Trailer Lights - A1157B
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Replacement light bulb 1157 1-800-940-8924 to order Optronics accessories and parts part number A1157B or order online at etrailer.com. Free expert support on all Optronics products. Great prices and Fastest Shipping for Replacement Light Bulb # 1157. Accessories and Parts reviews from real customers.
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Optronics Accessories and Parts - A1157B

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Replacement light bulb 1157


Features:

  • Replacement bulb part #1157
  • 8.3 Watts for tail light function
  • 26.9 Watts for stop/turn function


A1157B Replacement Light Bulb # 1157

Alternate part number: A-1157B





Video of Replacement Light Bulb # 1157
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Replacement Light Bulb # 1157 Spec Review

Hello neighbors, Steve here with etrailer.com. Folks, today we're looking at a replacement light bulb, specifically a number 1157 bulb, and this is gonna be a direct replacement bulb for your 1157 bulbs. It has 8.3 watts for the taillight function and 26.9 watts for your stop slash turn functions. So it is considered a stop tail and turn triple function, if you will. There are only two filaments in there. One of 'em doubles up obviously as the other light.

I'm gonna go ahead and see if we can demo this for you here in the daytime light so the one filament, not too bright, and the other one, a lot brighter. And I'll turn off my overhead lights and show you the same thing. Bear with me. Got the one filament and the brighter one. There we go.

All right, folks, that will wrap it up for our look at this replacement light bulb, the 1157 light bulb. I'm Steven, thanks for watching and have a great day.

Ratings & Reviews

4.8

82 reviews
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Replacement light bulb 1157

by:

Easy replacement job works perfect



by:

Love etrailer!



by:

Just a bulb, but I wouldn't be able to tow the trailer without it.



by:

THANKS KEVIN YOU DID A GREAT JOB WITH MY ORDER, YOUR EXCELLENT WAY OF PERSENTING YOUR SELF AND THE PRODUCT GOT MY VOTE TO RE-ORDER.



by:

Fast delivery and only location to have these tail light boxes. You all rock!!



by:

Timely delivery of products with a very reasonable shipping fee.
Already shopped with this vendor again



by:

Fantastic company! Amazing prices, shipping and customer service



by:

Everything came as advertised and in new condition. I am very satisfied with etrailer.com. I got just what I needed and at a great price! Could not be happier



by:

I have purchased products from etrailer several times. They deliver good equipment on time at a good price.



by:

Own a Yukon camper trailer from the 1980s and was happy to be able to order and receive exterior lamp bulbs without delay. In fact, I received my order 2 days sooner than I'd expected.



by:

In perfect working order and the price was very reasonable. I would highly recommend using etrailer.com for all your trailer needs. They provide outstanding customer service!!! Their price can't be beat compared to any other part store that I looked at.



by:

Outstanding customer service!!! Great products at an excellent price. etrailer is my go to trailer supply. Thanks for your fantastic service.



by:

Perfect fit. Good product description so felt confident ordering on internet.

Lucy N. profile picture

Lucy N.

10/10/2017

All parts installed and still working fine



by:

This is a two filament bulb for the tail light and brake/turn signal.

Theodore profile picture

Theodore

2/20/2021

Still good



by:

I've bought a few items from etrailer. Each item is of great quality and a fair price. Delivery of all items has always been timely and never a fouled up order. Great people to deal with and excellent quality of all products.



by:

Just picked up a couple of utility trailer lights..etrailer was GREAT to deal with...
Instructional/comprehensive videos and many Q&A's pertaining to my purchase were provided which made my install a snap! Good folks!
Thank You etrailer



by:

My etrailer products I have ordered have and continue to be good products at reasonable pricing. I look forward to doing business with etrailer again as I am sure I will have a need for more items.



by:

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.



by:

Products exactly as ordered. Very fast shipping. After I ordered, I realized there was another item I wanted. I called the 800 number and Steffen was a great help, cancelled the current order, placed everything in a new order and added the new item I wanted. Allowed me to get the savings due to order value.
Great service.



by:

Speedy delivery - they arrived before I've been able to use them - so my 4 star rating is reflective of this review being incomplete. All products in my order look to be intact and in new condition so I expect they will work well when I finally get around to mounting them on my utility trailer.



by:

I have a 2019 Dodge Ram with a trailer hitch and trailer wiring receptacle
that did not fit into the plug in receptacle.
For about x.xx I purchased a 7 blade adapter from [online store] to fit into the hitch brake plug.
I like this product very much and feel much safer with the extra brake light that works exactly like advertised.
Very happy and I could not beat the price.



by:

I bought replacement Wesbar tail lights for my boat trailer. I think your website is excellent (informational and no doubt what replacement lights I needed), shipping was fast, everything fine.

Paul F. profile picture

Paul F.

5/21/2018

The tail light still works like a charm but doesnt help me catch fish!



by:

just received my lights for my boat trailer yesterday and everything works great lights seem well made and very easy to install. Lights were well packed and shipping was fast very satisfied with the purchase. What is best of all is the customer service you dont find service like the folks at etrailer so hats off to George and the rest of the crew there at etrailer.

Mikey-d profile picture

Mikey-d

7/11/2018

Everything still works fine no problems and thank you for your great customer service have told all my fishin buddies about etrailer and how good the experience was and the customer service so you will be getting customers from my end for sure thanks again to all of you guys at etrailer.



by:

The bulbs just arrived today. The packaging was very secure. I bought extra bulbs for when my trailer lights go out. Thank you for the order and I'll be back.



by:

The service and answer to my question was quick. After ordering the items arrived a few days after. This not the first time etrailer had lighting parts for my older trailer. I would order from them again. Thank you for your pleasant and efficient service.

Kenneth S. profile picture

Kenneth S.

7/18/2025

The product is working out great and the installation was quick and easy. The help from staff was great.

Nick S. profile picture

Nick S.

7/18/2025

@KennethS That is great to hear. I am glad to hear our service was able to get you ready to rock and roll.

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See what our Experts say about this Optronics Accessories and Parts

  • Changing the Bulb in the Wesbar Tail Light Capsule
    The older generations of the Wesbar submersible low-profile lights came with sealed light bulb capsules that are not replaceable. If your capsule is sealed, then your best option is to replace the lights with new lights like part # 403026 and # 403076. The new lights come with capsules that allow you to replace the bulbs. The bulbs used in these lights are # A1157B and # 193.
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  • Roadmaster Replacement Lights RM-300220-20 and RM-300220-40 Bulb Types
    The bulb type that the Roadmaster replacement light # RM-300220-20 uses as a replacement is the 194 which we have as the part # A194B. The replacement light # RM-300220-40 uses a 1157 like # A1157B for the stop/tail and then a 1156 like the # DI85VR which is an LED for the turn signal.
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  • Replacement Light Bulb For Optronics Square Trailer Tail Light # ST2RB
    The standard light bulbs in the # ST2RB light is part # A1157B. This bulb features 8.3 watts for the tail light function and 26.9 watts for the turn and brake light function.
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  • Do I Need a Load Resistor When Upgrading Trailer Lights to LEDs?
    Hey Peter! If you can find an LED compatible 2057 bulb then yes you can replace it but we do not have one so sorry I can not help you there. As far as adding a resistor goes, maybe? You may not need load resistors when you switch to LED bulbs. The best thing to do is to try the lights without load resistors first and see if you have any issues. If you experience hyperflash on the turn signals or the LED lights do not have enough draw then you'll want to add one per circuit using the...
    view full answer...
  • Availability of Replacement Capsules for Wesbar Trailer Lights
    Some Wesbar lights have a the sealed type of capsule, and they are not meant to be opened. Instead, you would need to replace the whole capsule. The good news is that Wesbar offers replacements, depending on the model number, that can be easily opened to change worn parts, in addition to the sealed type. If you have a Wesbar Submersible Low Profile Light # 403026 and/or # 403076, the bulbs can be replaced by removing the clear capsule inside the light. If you want to swap it out for the...
    view full answer...
  • Is a Specific 1157 Light Bulb Used for Boat Trailer Tail Lights
    Yes, you should be able to use any 1157 bulb, such as # A1157B. So long as it is an 1157 bulb it will fit the socket and light up properly.
    view full answer...
  • Is the Bulb Replaceable in the # CR-007 Brake and Tail Light Trailer Hitch Receiver Cover
    Yes, the bulb in the Pilot Brake and Tail Light Trailer Hitch Receiver Cover, item # CR-007, is replaceable with a Replacement Light Bulb, item # 1157. Just pop the lens off from the front bottom right hand side and the bulb can be easily replaced. You may also be interested in a receiver lock to secure the brake light in your trailer hitch. The Trailer Hitch Receiver Lock, item # e98880, would be an excellent choice. We a a video demo of this item for you to review, see link.
    view full answer...
  • Replacement Bulb and Side Lens for Optronics Tail Light ST4RB
    We actually do, Mitch! To replace the bulb and side lens of the Optronics Tail Light # ST4RB you need the following: - Replacement Bulb # A1157B - Replacement Side Lens # A2RB
    view full answer...
  • Replacement Light Bulbs For Wesbar Trailer Tail Light With 102641 On Lens
    The Light Bulbs # A1157B & # A194B are replaceable on your Wesbar Tail Lights 403026. The part # 102641 is the number for the lens while the 102640 is for the inner assembly which is only available with the entire tail light at this time.
    view full answer...
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  • Removing 1157 Light Bulb from Optronics Trailer Light
    The bulb that's in the # ST8RB light is an 1157 like part # A1157B. To change the bulb remove the front lens by taking off the screws and gently prying the lens away. Then to get the bulb out you'll need to push in on it a bit and twist the bulb.
    view full answer...
  • Replacement Bulb for Wesbar Low Profile Trailer Tail Lights 403026 and 403076
    It sounds like you're looking for the replacement bulbs only for the Wesbar Low Profile Trailer Tail Lights # 403076 and # 403026. The replacement bulbs for these lights are the Replacement Light Bulb 1157 # A1157B. Since those lights are submersible and will have a seal on the inside of them, you'll want to be careful when removing and re-installing the lens cover when replacing the bulb to make sure there is no damage done in the process.
    view full answer...
  • Replacement Parts Available For Wesbar Low Profile Trailer Tail Light # 403076
    Wesbar only offers the following replacement parts below for their Low Profile Trailer Tail Light # 403076. I cannot speak to why they do not offer the light bulb assembly separate from the housing. As this is a submersible light they are likely afraid the housing could become damaged or is likely already damaged if that part needs to be replaced. Replacement Light Bulb # A1157B Wesbar Replacement Lens Set # 053522033360 Replacement Red Lens # 102641
    view full answer...
  • How to Change Light Bulb in Optronics ST8RB Trailer Taillight
    Changing the bulb is simple. Remove the screw on each corner of the front of the lens and gently pry the lens away from the housing. Be careful not to damage the gasket between the lens and the housing as doing so will allow water into the interior of the lamp. With the lens removed, you can push in on the bulb and twist it clockwise then pull the bulb free. Install the replacement # A1157B bulb in reverse order..
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  • Replacement Square Submersible Tail Lights for a Karavan Boat Trailer With Replaceable Bulbs
    I recommend the Tail Lights # ST5RB for the drivers side and # ST4RB for the passenger side. These lights are incandescent so you can replace the Bulb # A1157B should it burn out. The lights are submersible and the main lens is 4-9/16" x 4-9/16" square. The drivers side light has an additional lens on the bottom of the light which will illuminate a license plate on the Bracket # BK31BB.
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  • Replacement Bulbs for Wesbar Trailer Tail Light 403025
    Wesbar Trailer Tail Light # 403025 is sealed but does not have a replaceable capsule like the older models did. You need only replace the bulbs, types 1157 and 193. Replacement bulbs # A1157B. If instead you prefer to install light # 403026 you can do so. It will work and it uses the same bulbs as your current light.
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  • Replacement 1157 Bulb for Wesbar Submersible Low Profile Trailer Tail Lights
    If you have the Wesbar Submersible Low Profile Trailer Tail Lights # 403026 and # 403076 on your trailer, which the replacement lens # 102641 fits, then the correct replacement bulb is the 1157 part # A1157B on our site. If you would like to replace them with red LED bulbs then we also have part # P231157R360 that you can use.
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  • How to Identify Correct Replacement Bulb for RV Porch Light
    If you can find a bulb number on your porch light's original bulb we may not need you to submit a photo. Most smaller incandescent bulbs will have a number printed right on the bulb glass or stamped into the metal base, such as on part # A1157B, which is an 1157 type bulb. If you can find a bulb number simply enter that into our search box to see replacement parts. Depending on the bulb required we may be able to offer you an LED equivalent that will produce less heat and use only about...
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  • Which Filament in Optronics Bulb # A1157B is Used for the Turn Signal
    The Optronics 1157 Replacement Bulb, part # A1157B, and similar dual-filament bulbs have two different filaments. One filament is of a different resistance value, and thus makes a brighter light. That is why one bayonet on the bulb casing is at a different position than the other bayonet - so that you dont install the bulb the wrong way. The basic filament usually on the brown wire is running lights, the other filament usually green or yellow depending on which side of trailer has different...
    view full answer...
  • Replacement Light Bulbs for 2008 Forest River Flagstaff MAC 228
    We do have the Replacement Light Bulb # 1157 # A1157B that you're looking for, but we do not have a C193 incandescent bulb available at this time. If you wanted to replace it with an LED light, the 906/921 LED Light Bulb - Wedge Base - 360 Degree - 215 Lumens - Cool White - Qty 2 Item # DI48VR can be used to replace the 193 or the 194 light bulb, among others.
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  • Picking Out Replacement Taillight Bulbs for 1990 Jayco Popup Camper
    I looked up a few pictures of a 1990 Jayco popups and found that they all seemed to have taillights like the # 30-92-003 that you referenced. This light takes a 1157 bulb like the # A1157B for an incandescent bulb. The side clearance lights appear to be the part # MC31RB for red and # MC31AB which use 194 bulbs like the # A194B.
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  • Comparing Optronics Replacement Trailer Light Bulbs 1157 and 2057
    The Optronics replacement bulb, # A1157B (or 1157) are dual filament bulbs. The double-filament design works for combination brake, tail and turn lights. You can also use # ARC85FR for a LED upgrade. The 2057 bulb that comes in some light fixtures is not as bright as the 157 bulb.
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  • Can 1141 LED Bulb Replace 93 Incandescent
    93 bulbs and 1141 are compatible replacements for each other so if you have a 93 you could use the part # DI23VR for a soft white LED replacement.
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  • How to Remove and Install 1157 Bulb From Trailer Lights
    For an 1157 bulb like the # A1157B, in order to remove the old one you'll want to gently push down on the bulb while twisting the bulb 1/4 turn counterclockwise. You should then be able to pull the bulb from the socket. When replacing the bulb, align the dual notches on the base of the replacement bulb to the grooves inside the socket.
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  • Recommendations For Replacing A Burnt Out Bulb In Magnetic Towing Lights
    Most of the time the lenses on magnetic tow lights will be able to just pop off, but not always. If there is a gap between the lens and the base, it will work. If there is no gap and the lens is sealed to the base, you will need to replace the whole unit with something like the Hopkins Magnetic Tow Lights # C6304. The LED lights will tend to last much longer than incandescent lights and will draw less power, so it is highly recommended. If you do have the gap and can get the lens off,...
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