bing tracking image
  1. Accessories and Parts
  2. Optronics
  3. Trailer Lights
  4. Mounting Hardware
  5. Grommet
  6. Round
Rubber Grommet for 4" Round Trailer Lights - PVC

Rubber Grommet for 4" Round Trailer Lights - PVC

Item # A45GB
Retail:$11.85
Our Price: $5.14
You Save: 57%
Accessories and Parts
Add to cart
In Stock
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

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
This black PVC grommet allows you to flush mount your Optronics 4" round trailer light. Shock mount protection extends the life of the lamp. Recessed mount. Durable plastic construction. 1-800-940-8924 to order Optronics accessories and parts part number A45GB or order online at etrailer.com. Free expert support on all Optronics products. Great prices and Fastest Shipping for Rubber Grommet for 4" Round Trailer Lights - PVC. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (194)
  • Q & A (0)
  • Photos

Optronics Accessories and Parts - A45GB

  • Trailer Lights
  • Mounting Hardware
  • Grommet
  • Optronics
  • Round
  • 4 Inch Diameter

This black PVC grommet allows you to flush mount your Optronics 4" round trailer light. Shock mount protection extends the life of the lamp. Recessed mount. Durable plastic construction.


Features:

  • Grommet allows you to flush mount your Optronics 4" round trailer light
    • Designed to fit Optronics 45 Series lights (sold separately)
  • Shock mount design cushions light against vibration and jolting
  • Open back provides easy access when wiring
  • Light snaps into grommet for a finished look
  • Durable PVC construction
  • Recessed mount installation - hardware not included
    • Requires 4-1/2" cutout


Specs:

  • Outer diameter: 5-3/8"
  • Mounting depth: 1-1/16"


Optronics PVC grommet for 4 Inch Round Flush Mount Lights Diagram

Manufacturer Cross-Reference

Grommet will work as an exact replacement for:

  • Uni Bond GR4000
  • Wesbar 224088
  • Truck Lite 40700
  • Grote 91740
  • Peterson 426-18
  • Bargman 40-01-020


A45GB Optronics Rubber Grommet for 4" Round Sealed Trailer Tail Lights - Recessed Mount

Alternate part number: A-45GB




California residents: click here


Customer Satisfaction Score:


Customer Reviews

Rubber Grommet for 4" Round Trailer Lights - PVC - A45GB

Average Customer Rating:  4.7 out of 5 stars   (194 Customer Reviews)

This black PVC grommet allows you to flush mount your Optronics 4" round trailer light. Shock mount protection extends the life of the lamp. Recessed mount. Durable plastic construction.

by:

These are good grommets for the price. I've purchased a few over the years and they have never failed. I've only replaced them because they got some over spray from paint on them or something like that and it's cheaper and easier just to buy another pair and have them look brand new again. I use them on a Jeep built for rock crawling and I've attached a picture of one of them on the Jeep but this is an old set and not the best picture but you get the idea. They hold up well to abuse.

Matt F.

7/19/2017

Still working well and holding up to the punishment I put them through.



by:

I've ordered a variety of items over the years from etrailer usually to repair and sometimes upgrade trailers. Etrailer has the items I'm after. They get the order correct and shipped in a timely manner. With that kind of service I'll keep coming back. Thank You.



by:

Restoring a 1991 2 horse trailer. etrailer had all the exact lights made by Peterson, 35 years later.



by:

super tight fit. used a little lube to install. no cracking or deterioration as of 1 year



by:

Heavy duty grommets



by:

The packaging and shipping was quick and as always great to deal with good service. Thank you



by:

Worked as it should.



by:

The grommets did not fit into my original openings. I had to use a die-grinder to enlarge the holes by 1/8” all the way around. Once complete, they fit pretty good.



by:

Product as described. Service and communication excellent.



by:

I ordered the STL101RB Trailer Tail Light - Stop, Tail, Turn, Backup - LED to replace the standard tail lights on my Yamah Drive G19 golf cart. They replaced to stock ones perfectly as a neat way to add a backup lights for a custom feature. The backups led are actuated by the reverse switch on the dash.

It should be noted that the ground terminal on the two wire pigtail connection is not wired internally to the backup LEDs. They rely on the ground supplied by the three wire pigtail. Not a big deal, but worth noting. It throws a curve when bench testing.

These lamps add a nice custom touch!



by:

Product was delivered on time and meets my expectations for quality. I would buy this again and from eTrailer because of their service.



by:

Items arrived as described. Good quality, price and fast delivery made this purchase an overall great deal. The lights, cables and grommets I haven’t test them, waiting for my truck replacement bumper to arrive in September and have the body shop install them for me. I will update my review, but for now I recommend this products and the seller.

Nyfb4u2

8/21/2017

After a year using this product function-ability still performing as described. I recommend this product and seller.



by:

I have been looking for a long time to find a replacement for this light.
I could buy others, or kits etc, but I wanted this same light.
I contacted the company and explained what I needed.
They had it in stock as well as sealed light, the wires and connections.
It was delivered Very promptly, within a matter of days.
Excellent service.

Trailer L.

5/29/2016

Actually, It came out of the rubber gasket when we put the boat into the water====Never found it!



by:

Very pleased now other drivers can see my tail lights. Better yet turn signals & stop lights are bright .I would recommend these lights to any drivers that want to be safe on the highways

Roger R.

5/3/2021

Very well I should have ordered these years ago.



by:

Hi guys,
I'm usually the one answering
reviews
These guys are great! My client emailed the link & told me to order these for our horse trailers.
They've held up, to the point, we're not even close to needing to replace them.
We haul quite a bit. These lights have been tried & true, day & night.
When you're hauling a lot of livestock, you want people that have no clue what that entails, to see your lights well before they get near your livestock ; these lights do the job perfect!
We've outfitted 3 separate trailers with this company. We restored wires, lights, & pretty much everything along those lines ;from a 2 horse, to a large stock, & a gooseneck. All the parts come quickly, are all there, & work & fit great. What more can you ask for?!



by:

Perfect for what I needed - seals for computer cable access in a desk...timely delivery...excellent!



by:

The amber led lights I received were great and I installed them in the front of my 2002 Pontiac Firebird cuz I clipped another deer and ran over a raccoon in the same night and they took out my front lights again. So, rather than try to purchase an original set of turn signal and fog light assemblies along with the expensive bulbs, I converted it over to led and it is a great upgrade for an older car. The problem is that the three color coded wires came with no directions that told me which wire was ground, park, or turn. I had to figure it out as the color codes are different on my car. I would send a pic, but it is on my cellphone.



by:

Here's the pic of my finished project. Thanks for ur help.



by:

I’ve used etrailer on multiple occasions and have been completely satisfied with their service and professionalism .

Mark

4/19/2020

Superb. I thank you for the service and professionalism that the company exhibited.



by:

I ordered a set of tail lights for my boat trailer and they shipped fast. The customer service is really great too. The product is high quality and I'm very happy with it. The only issue I had with etrailer.com is they charge far too much for shipping and they only use UPS. So people like me who have a frequent shipper contract with other freight and delivery companies can't get it shipped at a reasonable cost. It is unreasonable to me to pay just as much for shipping as the product cost. Etrailer if you are listening, please ship small things in USPS flat rate boxes and allow customers to use their frequent shipping agreements with other delivery services.



by:

The rubber grommets are fine just a little tight for my existing lights to fit in. I had to use some glass cleaner to get them to even have a chance of going in and a lot of brute force. Now I'm not sure if it is because they weren't matched with the LED's I already have or maybe the rubber is not so "rubbery" I've had issues with other "rubber" things. All in all they replaced the cracking existing grommets and they look good.
The 2" marker lights were a waste of money not because there are issues, but because I needed 2 1/2" ones so these don't fit. I ordered wrong, but the quality of the lights look good.



by:

The product arrived quickly and was just as described. My trailer is older and I was having trouble finding replacements for the tail lights. Their sales rep, Cathy T., was knowledgeable and friendly. The next time I need parts for my horse trailer, I will go directly to etrailer.



by:

Communication with etrailer has been really good.This item was back ordered and they let us know immediately.

The grommets fit well into the holes and the lights pop in snuggly.



by:

Working well the trailer is parked out in the weather all year and the grommets are not hard of cracking



by:

I fought with these PVC grommets for 10 minutes then gave up. Waaay to stiff. I'm going to stick with rubber grommets and change them out when they start cracking and shrinking.


25
194
Show More Reviews

See what our Experts say about this Optronics Accessories and Parts

  • Round Replacement Tail Lights For a 2008 Coachmen Mirada 310DS RV Motorhome
    It sounds like your 2008 Coachmen Mirada 310DS is using lights like the LED Trailer Tail Light # OPT68FR which is held in place with a Rubber Grommet # A45GB. As no one is currently making a replacement lens for you lights you will need to measure the cutout to verify that you will be able to replace your lights with these. The rubber grommet is sized for a 4-1/2" hole. The light connects with a 3-Wire Pigtail # A47PB which can be spliced in if your light uses a different connection.
    view full answer...
  • Which Trailer Tail Lights Work With 4" Trailer Light Mounting Bracket BK45BB
    I would be happy to help! The Trailer Light Mounting Bracket for 4" Trailer Lights, Steel - Black Powder Coat # BK45BB you were looking at works with 4" round lights so I recommend the Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 21 Diodes - Round - Red Lens # STL55RB. You will also need Rubber Grommet # A45GB and Wiring Pigtail # A45PB. I recommend using heat shrink butt connectors # DW05744-5 for a weather tight connection. I included videos of the products...
    view full answer...
  • Wiring and Mount for Optronics 4 Inch Round Trailer Light # ST45RB
    Sealed, 4" Round Trailer Stop, Turn and Tail Light, Flush Mount, 3-Function Item # ST45RB has a plug in the back to accept pigtail # A45PB. On it the white wire is ground, black is for tail lights, and red is for brake lights and turn signals. This light can be mounted using grommet # A45GB with bracket # BK45BB. Or if mounting directly in a surface you would just need the grommet. I have linked videos of all of these parts for you.
    view full answer...
  • 2 and 4 Inch Diameter Trailer Lights, Grommets, and Harnesses
    I will be happy to help and give you some options. For 2 inch diameter red lights we have several options: # MC53RB (use grommet # A54GB and harness # A46PB) # MCL50RB (use grommet # A54GB and harness # A46PB) # MCL55RB (use grommet # A54GB and harness # A46PB) # MCL55R1224B (use grommet # A54GB and harness # A46PB) All in one option # MCL-50CRK # MCL155RB (use grommet # A54GB and harness # A46PB) For 2 inch diameter amber lights we also have several options: # MC53AB (use grommet #...
    view full answer...
  • 2 inch and 4 inch Diameter Recess Mount LED Clearance Light Recommedation
    For the 2 inch light you would want the part # MCL55RB with the grommet part # A54GB and pigtail part # A46PB. For 4 inch we have the part # STL55RB. You would need the grommet part # A45GB and the same pigtail # A54GB. I wish we had a 3 inch option, but you may be able to enlarge the 3 inch holes to match the 4 inch ones.
    view full answer...
  • Are LED Lights with More Diodes Brighter and Can a Trailer Backup Light be Used on a Truck
    It is pretty safe to assume that the more diodes in an LED light the brighter it will be. The only time that is not necessarily true is if one light has large diodes and the other doesn't. But any way you slice it light # BUL53CB and its 36 diodes is going to be bright. In this case, for all intents and purposes, a 4-5/16 inch and 4-1/4 inch diameter won't make a difference. The light can be used on your truck. In fact a lot of people use lights like this and other trailer lights on...
    view full answer...
  • Replacement Backup Light for Peterson 426E on Motorhome
    The Peterson 426E is a grommet mount lamp which is 4 inches in diameter. We don't offer that particular lamp, but it cross referenced to several lamps offered by Optronics. Here's what's available: • # BU45CB is a in incandescent lamp that could be used as a reverse light. Compatible with 12V systems • # BUL06CB is a 6-diode LED lamp. 12V compatible • # BUL11CB is a 10-diode LED. 12V compatible • # M826C-7 is a 7-diode LED. 12V compatible • # BUL53CB is a 36-diode LED. 14V compatible •...
    view full answer...
  • Trailer Light And Mounting Bracket Recommendation
    The Optronics light, part # STL42RB, you are asking about uses the mounting holes in the included flange for mounting. This light features 10 Super LED lights and has a sealed, waterproof housing and lens kit. The mounting holes in the flange are spaced 4-1/4 inches apart center-to-center. We do have a mounting bracket, part # BK45BB, for a 4 inch light but the mounting holes are spaced 4 inches center-to-center. If you wished to drill the holes in the bracket to match the holes in the...
    view full answer...
  • How Does the Chrome Cover # A45CGB Install Over Rubber Grommets
    I spoke with my contact at Optronics and she said you will need the 4" grommet, part # A45GB, to flush mount your 4" lights. The grommet gives shock mount protection that will extend the life of your lamp. The chrome cover, part # A45CGB, is designed to be screwed into the grommet part by the two screws which are included. The 4" grommet requires a 4-1/2 inch diameter mounting hole. You may also need a wiring harness like # A47PB.
    view full answer...
  • Grommet for Optronics 4 Inch Round Recessed Mount Trailer Lights
    For the Optronics Trailer Tail Light - Stop, Tail, Turn, Backup - LED # STL201RB, you will want the Rubber Grommet for 4" Round Trailer Tail Lights # A45GB.
    view full answer...
  • What Optronics Parts do You Carry for My Trailer Light Replacement?
    I have an answer as to the availability of the parts you are looking for. Unfortunately, we do not carry the 146-181 or the MCL155RBP. However, we do carry the rest of the parts you list. Those are the following: - 2-Wire Pigtail for Optronics Trailer Lights - 2-Prong PL-10 Plug - 18" Lead # A86PB - Rubber Grommet for 4" Round Trailer Lights # A45GB - Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible # STL603RB - Right Angle 3-Wire Pigtail for Optronics Trailer Lights...
    view full answer...
  • Flashing Amber Warning Light for Agricultural Equipment
    For an amber agricultural light I recommend # W8260601 which was designed for this purpose. You could add # W002515 to wire it up. We also have amber flashing warning lights like # SLL43AB1 and # SLL43AB2 that can be wired to flash alternately. You would also need harness # A45PB for each and a grommet to mount them # A45GB. I have included a video review of these lights for you. The Optronics light # STL51AB you referenced is designed as a parking and turn signal light rather than a...
    view full answer...
  • Installation Assistance With Mounting Hole Dimensions Optronics GLOLight LED Stop/Turn/Tail Light
    To install the Optronics GLOLight LED # STL101RMB you will also need grommet # A45GB. There are two mounting options for this LED light. The first one is using Optronics grommet # A45GB and mounting directly into your 1998 Jeep Wrangler. The other option is using the Optronics Mounting Bracket # BK45BB. If you decide to use the mounting bracket, you will still need the grommet as well. If you are mounting using the grommet only the grommet opening is 4-1/2 inches. When cutting this...
    view full answer...
    Image 1 for
  • Optronics GLOLight LED Stop/Turn/Tail Light Availability
    We do carry the GLOLight # STL101RMB as well as several other GLOLight products. I have attached link for the GLOLight product page. This unit has a four inch diameter; for installation you will also need to order the following: Three-Wire Pigtail part # AL45PWTB; Rubber Grommet part # A45GB; and the Mounting Bracket part # BK45BB. I attached a short video of the GLOLight # STL101RB, which is the same base part as the one you reference, however, the video is demonstrating the part with...
    view full answer...
    Image 1 for
  • Best Way to Install a Recessed 4 Inch Round Tail Light on a Trailer
    The best and easiest way to install a round 4" tail light like the Miro-Flex LED Trailer Stop/Turn/Tail Light part # STL23RB on a trailer would be to first clean the edges of the holes (no sharp metal) and then spray some soapy water on the gourmet while slipping it into place being careful not to tear the rubber. Once the grommet is in place you will then what to run the pigtail harness though the hole and plug it into the back of the light. Then you can then insert the tail light into...
    view full answer...
  • Wire Pigtail for Optronics 4 Inch Round LED Trailer Reverse Light
    Although the rear of the lamp features three pins, only two of them are active which is why the 2-prong pigtail is called for (see photo). My guess is rather than design a separate back for lights that only need the 2 pin pigtail, Optronics finds it more cost effective to use a single back for all their 4 inch round lights.
    view full answer...
    Image 1 for
  • What is the Melting Point of Trailer Light Rubber Grommet A45GB
    The type and composition of rubber is going to determine its melting point. Rubber grommet # A45GB is a lower grade than tires so it is on the lower end of the scale. Rubber components can start to melt at 160 to 356 degrees Fahrenheit. The grommet, being at the lower end, is likely in the 160 to 200 degree range but its melting point has never been officially tested. The lights this grommet is designed for are not made for high temperature applications which is why it is on the lower end...
    view full answer...
  • Black Rubber Grommet for 4 inch Round Trailer Lights A45GB Mounts in a 4-1/2 inch Diameter Hole
    The Black Rubber Grommet for 4 inch Round Trailer Lights, part # A45GB, mounts in a 4 1/2 inch diameter hole. This grommet will work with the Sealed 4 inch Round LED Trailer Light, part # STL23RB, and should work with your fiberglass application. The light, grommet, part # A45GB,wiring, part # A45PB, and wiring, part # A47PB, are all sold separately.
    view full answer...
  • Functions of Optronics 12 Diode Miro-Flex Tail Light # STL23RB
    The Optronics 12 Diode Miro-Flex LED Trailer Stop/Turn/Tail Light you referenced, part # STL23RB is a three function lamp. The # A47PB right angle pigtail, which is sold separately, has a white ground wire, a red wire that carries the brake and directional signal and a black wire that serves as the running light circuit. If the vehicle headlights were turned on, the lamp would be lit. Applying the brakes would make the lamp brighter. The lamp has several mounting options. It can be...
    view full answer...
  • Can Rubber Grommet and the Optronics Clearance Light be Used on 1/4 in Thick Aluminum
    Yes, the Rubber Grommet # A45GB and the grommet of the Sealed, Uni-Lite Mini LED Side Marker # MCL11RKB can be used on a 1/4 inch thick hole in aluminum.
    view full answer...
  • Recommendations For Adding Tail Lights To A Kuat NV 2.0 Bike Rack
    Though you will need to have a 4 Flat on your 2001 VW Eurovan, and for this I do recommend the Curt # C56175, adding lights to your Kuat NV 2.0 is definitely a good idea. I went through all our options for adding lights to a bike rack or cargo trailer, and the Curt Auxiliary LED Indicator Lights # C53201 will be the good option, but there is a potential issue. The base of the rack is not the same length on both sides and the arm the swings up and tightens down on the wheel will give you...
    view full answer...
  • Availability of 24-Volt Tail Lights for Lowboy Trailer
    We do have some trailer tail lights designed to work on a 24-volt system. I recommend using light # STL23R24B. There are a few ways to mount this light. You can use a grommet and flush mount it in a 4-1/2 inch cutout using # A45GB. Or you can surface mount it with a bracket, # BK45BB. You will also use a wiring harness, # A47PB. These parts only come in red.
    view full answer...
  • What Size Hole is Required to Install Optronics Grommet A45GB
    The grommet part # A45GB that you referenced requires a 4-1/2 inch diameter hole be cut to install. I looked up the light you mentioned and it is a 4 inch diameter light like what this is designed to fit. I attached an install video for you to check out as well.
    view full answer...
  • 4 Inch Round White Trailer Backup Lights Needed for a Quick Loader Trailer
    Yes, we have the Sealed, 4 inch Round Trailer Back Up Light, # BU45CB, that has a clear lens and provides a white backup light. Along with the light you might also need a 4 inch round grommet, # A45GB, and a straight pigtail, # A45PB, or a right angle pigtail, # A47PB.
    view full answer...


< Previous
123. . .5



Do you have a question about this Accessories and Part?


Info for this part was:

Employee Jackie C
Expert Research:
Jackie C
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Andrew K
Video by:
Andrew K
Employee Kathleen M
Installed by:
Kathleen M
Employee Rachael H
Updated by:
Rachael H
Employee Brian T
Updated by:
Brian T
Employee Chad S
Video Edited:
Chad S

At etrailer.com 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 1-800-940-8924