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PVC Grommet for 6-1/2" Oval Trailer Tail Lights

PVC Grommet for 6-1/2" Oval Trailer Tail Lights

Item # a70gb
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Optronics Mounting Hardware Accessories and Parts - A70GB
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An oval, black PVC grommet needed for flush mounting 6-1/2" oval lights. This PVC grommet gives shock mount protection that extends the life of the lamp. Along with the sealed light, a 3-wire pigtail is required to complete the installation. 1-636-306-4830 to order Optronics accessories and parts part number a70gb or order online at Free expert support on all Optronics products. Great prices and Fastest Shipping for PVC Grommet for 6-1/2" Oval Trailer Tail Lights. Accessories and Parts reviews from real customers.
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  • Reviews (682)
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Optronics Accessories and Parts - a70gb

  • Trailer Lights
  • Mounting Hardware
  • Grommet
  • Oval
  • Optronics
  • 6-1/2 Inch Long

An oval, black PVC grommet needed for flush mounting 6-1/2" oval lights. This PVC grommet gives shock mount protection that extends the life of the lamp. Along with the sealed light, a 3-wire pigtail is required to complete the installation.


  • PVC grommet for flush mounting 6-1/2" oval lights
  • Shock protection extends lamp life
  • Open back gives easy access for wiring
  • Requires a three-wire plug (A45PB or A47PB) along with the light to complete installation
  • Dimensions: 7-5/8" L x 3-3/8" W x 1-1/8" D

Manufacturer Cross Reference
Grommet will work as an exact replacement for:
Wesbar # 226088
Truck Lite # 60700
Grote # 92420
Peterson # 421-18
Bargman # 40-06-020

Manufacturer Specifications

Black PVC grommet allows oval lights to be flush mounted. Provides shock mount to lengthen bulb life.

dimensions of rubber grommet

A70GB Optronics Rubber Grommet for 6-1/2" Oval Trailer Tail Lights

Alternate part number: A-70GB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

PVC Grommet for 6-1/2" Oval Trailer Tail Lights - a70gb

Average Customer Rating:  4.8 out of 5 stars   (682 Customer Reviews)

An oval, black PVC grommet needed for flush mounting 6-1/2" oval lights. This PVC grommet gives shock mount protection that extends the life of the lamp. Along with the sealed light, a 3-wire pigtail is required to complete the installation.


Very easy to install. Considering I had the same lights and grommets on the trailer. Took less than 10 minutes to install.


Received it in record time.. exactly what I needed/ordered.. could not be more satisfied.. recommend doing business with etrailer


Great looking taillights wish I had bought them sooner. thanks

just like a TIMEX watch takes a licking
oval t - 03/21/2015


Received product quickly. Easy to navigate on the website. Exact match to old parts. Great service.


Perfect fit, high quality, fit lights p erfectly.


Exactly what I needed.... I bent up my trailer light box when hauling a tractor, and got the back end of the trailer caught up in a ditch.... so I had the box cut off and a new one welded on.... the old light was broken, so I ordered a new one... as I wanted the same lights on both sides, I ordered two of them from etrailer, and now I'm back in business with the right lights on my flat bed. Fast shipping also was a plus! Thanks etrailer!


Product was exactly what I was looking for, Prompt shipping got all products in time for our plan on traveling and everything fit as it should will definatly purchase more from them as needed


They seem to work well but do not fit as snug as the ones I replaced. I will add to my review after I take my horse trailer on very bumpy mountain roads and find out if they are going to stay put.


Great product! My right brake/turn signal stopped working on my trailer, so I purchased a new ST70RB 6-1/2" oval trailer light, along with the wiring plug and this matching grommet, installed them in about 30 min, and it works great! The package arrived quickly and was packed nicely. I found out my fuse was blown on my 2016 Traverse for the right trailer stop/turn signal, but that was most likely from the old light which I think was leaking. I didn't know there was a fuse just for that so I learned something new. I will definitely purchase trailer products again from!


I purchased these Submersible LED bulbs for my boat trailer for two reasons. The first is so road traffic is aware of my intentions of backing up and the second is to make it easier to back my trailer into my driveway at night. The only thing that I find disappointing about this product, is that the wires are not sealed. You have to plug a pigtail in to power the bulb. Although they say it is watertight, I still plan on sealing the plug with some marine grade silicone sealant. Otherwise I am very satisfied with the way these bulbs light up my path of travel.


Used these grommets to install lights on my cargo trailer that I pull behind my motorcycle. I wanted lights that would be sealed from leaking and these grommets allowed me to do that. Easy to use and they hold the lights as expected. Will definitely use these again if I need a similar set up.


grewat product. easy plug and play for the torn light grommet I had


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.


It was not a good fit and fell out...

it didnt fit well and light fell out of trailer
John - 08/23/2022


Awesome Customer Service!


Good fit/replacement.


Product was exactly what I was looking for at a really good price.


On a road trip with motorcycle trailer and trailer light with grommet flew out after hitting pot hole..Replacement light and grommet fit and works great. The grommet could be a bit more snug but will watch on next trip. Thank you so much.


Excellent service, prompt delivery, comparable price, highly recommended vendor.


Mike was easy to work with. Great product with excellent customer service.
Thank you


I wish they had come with the recommended hole dimensions for drilling but they work great.

For this mounting grommet the hole you would need to cut in the location is 6-3/4 by 2-1/2 inches. I have included a link to one of our expert questions that answers this exact question, and provides some additional recommendations.
-- Etrailer Expert Rachael H - 06/22/2018


New grommet was a must when replacing new tail lights. Made instillation of new lights a breeze!!!


Worked well


Didn't fit the holes in my trailer, although LED lights fit and were same size as original. Measure the cut out in your trailer before ordering. Product was fine but my assumption was it was a standard size.

My fault - they will go in the trash now.

I just had the same experience, needed a thicker or bigger gasket, even trailer manufacturer confirmed this issue, not sure where to get the thicker gasket from? Like You, I thought these were all the same size, the lights to go into the gaskets are...but not the gaskets?
-- comment by: todbnla - 05/20/2013


Great light - Fit was right on --

Show More Reviews

See what our Experts say about this Optronics Accessories and Parts

  • Installing LED Tail Lights and Grommets in Trailer Mounting Hole
    When installing your new lights, you will first install the grommet # A70GB into the hole and then install the light into the grommet. This will ensure the grommet is properly seated in the hole and the light will be a snug fit. I've attached a video installation to further assist.
    view full answer...
  • Size of Hole Needed to Install PVC Grommet # a70gb in Thicker Mounting Surface
    The ribs of the PVC Grommet for 6-1/2" Oval Trailer Tail Lights # a70gb do push further into the light assembly when you attempt to install on a thicker mounting surface. Since the ribs are on the top and bottom you'd just need to open the hold up to 2-5/8 inches vertically and the same 6-3/4 inches left to right and you'd be good. I attached an install video for this for you to check out as well.
    view full answer...
  • What are the Hole Dimensions for the #A70GB, Rubber Grommet for 6-1/2 Inch Oval Trailer Light
    I went out into our warehouse and measured one of our Rubber Grommet for 6-1/2 inch Oval Trailer Light, # A70GB, that we have in stock. From the measurements I took, you will have to cut a hole that is 6-11/16 inches long and 2-5/8 inches tall.
    view full answer...
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  • Rough Opening Dimension and Maximum Panel Thickness for # A70GB Lamp Mounting Grommet
    The # A70GB grommet is meant to fit a 6-11/16 by 2-5/8 inch rough opening. The maximum panel thickness would be right about 3/16 of an inch.
    view full answer...
    Image 1 for
  • Could the Rubber Grommet # A70GB be Installed in 5/16 in Thick Material
    The Rubber Grommet # A70GB should have no problem being used in a material that is 5/16 of an inch in thickness as long as the hole is cut the proper shape. To see the dimensions that the hole will need to be check out the picture I attached.
    view full answer...
    Image 1 for
  • How To Remove Trailer Light That Has Been Riveted To Trailer
    The way to remove a riveted item on yoru trailer is by using a drill. You want to use a drill bit that is smaller than the head of the rivet. This will remove the body of the rivet and then you can just easily pop the head of the rivet out without expanding the hole. I have attached a link to the trailer lights we offer. If you have any questions about a specific replacement just let me know.
    view full answer...
  • Availability of Replacement Oval Grommet for Use with Cargo Carrier Light Kit # 20174
    We do indeed offer a stand-alone replacement oval rubber grommet for use with 6-1/2-inch trailer lights such as those included in Light Kit # 20174. The part # a70gb is sold individually and the linked photo gives you its measurements so you can be sure it fits before ordering.
    view full answer...
    Image 1 for
  • Is Optronics Trailer Tail Light # STL70RB Sold in Pairs or as a Single Light
    The Optronics Trailer Tail Light # STL70RB referenced in your question is a single light assembly. If you need a pair of lights you will just need to order 2. For the rubber grommet you will use part # A70GB. I have attached an installation video for this assembly that you might also find helpful.
    view full answer...
  • How to Install Tail Light and Grommet into Trailer Light Mounting Bracket # BK70BB
    I went out to the warehouse and pulled a # BK70BB bracket, a 6 inch oval tail light and the A70GB grommet. I found that it is much easier to install everything if you push the grommet fully into the bracket until it is fully seated and then push the light into the grommet until it bottoms out. At that point, you will have a fit tight enough that the lamp is securely held in place. Make sure the grommet is pushed FULLY into place before inserting the lamp.
    view full answer...
  • How to Remove Grommet-Mounted Tail Light for Bulb Replacement
    Usually lights that mount using a rubber grommet will need to be popped-out of the grommet to give you access to the lens for removing that part to allow for bulb replacement. You can push the light out of the grommet by moving it out from the grommet, toward you as you look at it. For instance, the red oval light # ST70RB from Optronics uses grommet # A70GB for installation. This light is a exact replacement for Truck Lite part 60202R and others as listed on the linked page.
    view full answer...
  • Rubber Grommet For 6-1/2" Oval Trailer Lights
    The correct grommet for the Optronics Trailer Tail Light # ST70RB you referenced is the PVC Grommet for 6-1/2" Oval Trailer Tail Lights # a70gb. It's a direct replacement for Wesbar # 226088 Truck Lite # 60700 Grote # 92420 Peterson # 421-18 Bargman # 40-06-020 and will allow you to flush mount 6-1/2" oval lights. I linked the parts above, as well as attached a video for you to check out.
    view full answer...
  • Brackets and Grommets for Boat Trailer Lights
    I've linked to a list of our trailer light mounting grommets and brackets. Which one you choose will depend on the dimensions of your light. For example, the Optronics Mounting Bracket, part # BK70BB, will mount 6-1/2" oval lights and requires a grommet, part # A70GB, to complete installation. It mounts on 6-1/4" centers, so the mounting area needed can play a part, too. I've linked to video reviews of both of these in the off chance that this is what you need. If you tell me your light's...
    view full answer...
  • Replacement Tail Light and Grommet for Trailer Hitch Mount Cargo Carrier Light Kit # 20174
    Yes, a single light and single grommet from the Light Kit, # 20174, are available. For the light, you will need Trailer Stop, Turn and Tail Light, # ST70RB. For the grommet, you will need # a70gb. When the light is installed correctly, it will be very tight and you will not be able to easily push it out from the back. I have included a link to a video showing a typical installation.
    view full answer...
  • Measurements to Determine if Wesbar Taillight Bracket 106873 Work with Haul Master Light 67064
    The Haul Master light 67064 is described as a 6-inch light but the specs indicated online show dimensions are 7-1/4 x 1-3/4. This item includes a mounting grommet. The bracket you referenced, Wesbar # 106873, is designed for use on cargo carriers but it could certainly serve other purposes as well. I went to our warehouse and measured the oval opening. It measures 2-1/2 x 6-1/2 and the light mounting hole spacing center to center is 7-3/16-inches. Please refer to the linked photo I prepared...
    view full answer...
  • Could Optronics Clearance Light # ST70RB Fit Polaris PU5X16-RW
    I am sure you could fit the Sealed, 6-1/2" Oval Trailer Stop, Turn and Tail Light # ST70RB on your trailer but I couldn't find a decent enough picture of your trailer to determine if it does use a similar light or not. I attached a dimension picture though for this light for you to compare to what you have on your trailer to see if it's an exact fit or not. For a grommet to install this in a trailer flush (assuming yours is different) you'd want # A70GB. Or for a mounting bracket you'd...
    view full answer...
    Image 1 for
  • How to Install the ST70RB Red Oval Flush Mount Tail Lights on Trailer without Existing Hole
    To install the part # ST70RB you could use the mounting bracket part # BK70BB to add a provision to your trailer and then use the grommet # a70gb.
    view full answer...
  • Mounting Dimensions of the Optronics 6-1/2 Inch Trailer Light # ST70RB
    I took a few measurements for you that I think will help. I have attached a diagram and made a short video for you showing the dimensions and the light. I believe this light will work with your bumper without having to cut out a hole in the back of the bumper. When the light is mounted in the grommet, portion of the light that extends past the wall of the bumper will only be 1-11/32 inches. You should have no problem installing this in your 2 inch x 4 inch bumper.
    view full answer...
    Image 1 for
  • Will Optronics Trailer Light # ST70RB Fit a 1989-1990 Ranger Trailer
    The Optronics trailer light # ST70RB, is an exact replacement for the following lights: Uni Bond # SE2238R Wesbar # 203561 Truck Lite # 60202R Grote # 52182 Peterson # 421R Bargman # 40-06-001 The light manufacturer/model number information may be found on the light housing itself (not the lens). If that information is not available on the light housing then you will need to choose a replacement based on measurements (see product page) or if the trailer manufacturer has that information...
    view full answer...
  • Is the Optronics Trailer Light # ST70AB Flush Mounted
    Yes, the Optronics Trailer Light # ST70AB that you referenced is flush mounted and would be an excellent choice for you. It does have a ground wire connection that you would want a Right Angle 3-Wire Pigtail # A47PB to use for installation. You would need to plug this into the back of the # ST70AB and then wire it by function to your trailer wiring. You might also be interested in purchasing a Rubber Grommet # a70gb to make installation easier.
    view full answer...
  • Does Optronics Trailer Light, # STL70RB, Fit Wesbar 203561 Light For Upgrade To LED Lights
    Yes, the Optronics Trailer Light, # STL70RB, will replace the Wesbar 203561 to upgrade to LED lights. You will want to check the factory grommet when you remove the light, if the factory grommet is in good condition you can use it with the LED upgrade. If the factory grommet is worn or shows any signs of damage, now is the time to replace it. You would use the Optronics Rubber Grommet, # A70GB. Same thing on the 3-prong plug connector, check it also to make sure it is in good condition....
    view full answer...
  • Does The Optronics Trailer Light, # BU70CB, Have A Plug-In Wire Attached
    The Optronics Trailer Light, # BU70CB, does not have a plug-in wire attached. It will require the Optronics Straight 2-Wire Pigtail, # A45CB. This part is the 2-prong plug that inserts into the back of the light and has a 6 inch lead with two wires. The red wire is bare at the end and the white ground wire has a ring terminal on the end. You will also need the Optronics Rubber Grommet, # A70GB, for flush mounting the trailer light.
    view full answer...
  • Is Oval Trailer Turn Stop and Tail Light Part # ST70RB Submersible
    No worries, the 6-1/2 Inch Oval Trailer Stop, Turn, and Tail Lamp part # ST70RB is sealed and is waterproof as well as shockproof. We also offer the grommet, part # A70GB as well as the wire pigtail, part # A45PB which are sold separately.
    view full answer...
  • Is Optronics Trailer Tail Light # ST70RB the Same As Petersen Trailer Tail Light # M421KR
    Yes. The M421KR is a Petersen part and the Optronics equivalent is the Sealed, 6-1/2 inch Oval Trailer Stop, Turn and Tail Light, 3-Function, # ST70RB, that you have referenced. For a complete set up, you will need Rubber Grommet # A70GB, and Straight 3-Wire Pigtail, # A45PB.
    view full answer...
  • How to Replace 6-1/2 Inch Oval Boat Trailer Tail Light without Screws
    When replacing your 6-1/2 inch oval tail light like the Optronics Sealed # ST70RB that does not have any visible screws on your boat trailer, you can remove the assembly by simply pulling it out of the existing grommet. You can wiggle it back and forth to get it loose and you may need to use a screwdriver to put a bit of pressure on the edge. Then when replacing the light, you will just snap the new light back into the grommet after connecting the 3-prong plug. I have attached an installation...
    view full answer...

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