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Optronics/
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Mounting Brackets/
4 Inch DiameterItem # BK45BB
Retail:$4.96
Our Price: $3.56
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6" L x 5-13/16" W with 1-3/8" base; Powder coated steel; mount vertical or horizontal; requires A45GB grommet; mounts on 4" centers
A black, steel bracket for mounting 4" round lights. The bracket measures 6" long x 5-13/16" wide with a 1-3/8" deep mounting base. The bracket has a 4-1/2" wide hole in the center for mounting the light, and has six screw holes in the bracket spaced equally around the hole. The black powder coated bracket is made from sturdy, durable steel and can be used to mount lights vertically or horizontally. The bracket base mounts on 4" centers. Along with the sealed light, the A45GB grommet is required to complete the installation.
Black powder coated steel bracket for horizontal or vertical mounting on 4" round lights. A45GB grommet required for complete installation.
Video of Trailer Light Mounting Bracket for 4" Trailer Lights, Steel - Black Powder Coat
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're reviewing Optronics part number BK45BB. This is a trailer light mounting bracket for four inch trailer lights. It's made of durable steel and it has a black powder coat finish that resists rust and corrosion. It works with four inch lights and grommets, but the cutout hole is four and a half inches. If you don't already have a rubber grommet, you should be using this one from Optronics. This is sold separately on our website. It's the Oprtronics four inch rubber grommet, part number A45GB. I have a light here also, so we can show you how this works. Let's get the grommet on the light and then it fits into the four and a half inch mounting hole like that and gives you a nice weather resistant seal.
The rubber also will cushion the light and help protect it so it will last longer. Now let's look at some dimensions. This mounting bracket is six inches long. It's five and thirteen-sixteenths of an inch tall. The center hole, as we said, is four and a half inches in diameter. The mounting holes are four inches apart in center hole, from the center of one to the center of the other. The lip at the top is one and three-eights of an inch deep. There you have it for part number BK45BB, from Optronics, the trailer light mounting bracket for four inch trailer lights. .
Average Customer Rating: 4.9 out of 5 stars (43 Customer Reviews)
6" L x 5-13/16" W with 1-3/8" base; Powder coated steel; mount vertical or horizontal; requires A45GB grommet; mounts on 4" centersHere's installed photos... 554839
Awesome!!!
Nick L - 08/17/2019
Good product good service I like ordering from E trailer 625696
Very durable mount 602863
As indicated! On time! Good quality! Fair price! 583773
professional and fast service....thanks 538591
Converting an older home made trailer to LED lighting. These high quality parts worked great. Received order within 3 days. Thanks 501682
Great product ... Exactly what I needed! Worked Great! Thanks ! 469425
Super Product .... Very Pleased !
Barry H - 01/25/2019Great prices just what I needed fast delivery thanks 467246
Great strong bracket made out of quality metal and comes prepainted that isn’t easy to scratch. 464437
Great product 459826
Not a lot to say about the product, it's pretty simple and does everything it's supposed to do. What was remarkable was the help I received from etrailer finding the product and the speed at which it was delivered to me. I am a happy customer. 434077
I bought Brackets, Rubber grommets, Sealed round ( ST45RB ) lights and wire ends plugs. I also bought 4 other bulb lights. The sealed round lights don't fit tight in the rubber grommet, the light has a loose fit and the light turns in the grommet. One of the sealed lights only lasted 2 weeks and it went out. 427457
I buy many products from Etrailer -- Very high quality merchandise - exactly what I need for my business- super service- fast delivery time - I always get what I expect- I have told other people where I get my trailer stuff ----- I have a golf cart repair business and wire trailers--- (excellent rating) --- Dale A. 409341
Service was excellent. Part(s) lived up to my expectations-as usual. 396414
Great quality. Super fast delivery. 383603
Great product. Installed in minutes well worth the little bit of money 368281
great pricing along with quick service 359855
everything looks great ,decent price 304738
Bracket look great and fit my lights perfectly. Once I get them mounting I think they will look great as well. 274130
Good sturdy mount. Only problem is they will start rusting after a season or two if you use them in salt water. I wish they made them with a galvanized finish or out of Stainless steel 263146
fast shipping very happy look good on my old trailer 241090
These brackets are exactly what I neede d. 232533
Great company !! Had the right products in stock and shipped the right products ! Only took a few days to receive order. Will definitely order from this company again. 224249
GREAT SERVICE QUICK TO SHIP 222968
Received on time As advertised 215059
Got these for my car trailer. Was originally going to cut mine out out of plate steel but these were to cheap not to get. They are very strong with good thick metal. Going to weld them on instead of bolting but either way, I think they would be plenty strong. Great product, well worth it. 211301
Great looking product, can't wait to install and see how they look. Thanks etrailer for fast service 180344
did what i wanted 166770
does its job
fred - 12/26/2015Item is exactly as described. High quality, Heavy duty material. This was a smooth Transaction, shipping was fast, price was good and I will Definitely do business here again. Thanks again 134995
Lights fit right into brackets 132123
great looking bracket should work just fine. 117074
Brackets are ok, but whoever made them skipped 30 seconds of prep work by not cleaning up the edges of the bracket. Cut my hand multiple times while installing the taillight into the bracket. Simply some quick sanding or some wire wheel work would have solved this. No point in doing it now as it would damage the powder coating. Mildly annoyed, but still decent product for the price. 90710
After a year of use they are still holding up. Powder coating is resisting the elements well. Im still satisfied with the purchase. Despite the issues I had with the manufactures product prep did not effect the performance of the part. Would by again if needed.
Jason - 01/19/2015Brackets are extremely solid and well built, I am confident they will last a very long time. Because of their durability I was not able to bend them to the angle I wanted but I was able to relocate them to a new position on the trailer. 84229
Works perfectly with the round LED lights (product STL42RB in my case). 81293
Received the brackets in quick time and good condition. Am pleased with product, but have not had time to mount them as yet. But I am sure they will be what I wanted. Thanks for the quick service. Sylvia S. 60745
Nice bracket! High quality, heavy duty part. 32087
The bracket is excellent quality. Heavy duty construction and fit the light assemblies and grommet perfectly. The shipping was extremely quick, and the price just right. Would recommend etrailer.com highly. 30586
I purchase some 4" round LED tail lights with grommets and was trying to find a way to mount them. Then I found this mounting bracket on etrailer.com and ordered 4 of them. I have just received them and they work perfectly with the 4" round LED tail lights. Thanks etrailer. Troy D Smith 29491
i ordered my part in the AM and it was shipped the same day! Great turn around... 28170
EXCELLENT PRODUCT AND REASONABLY PRICED, FAST SHIPPING. 27003
Sturdy, well made and with a weather proof paint job. 23971
Bracket was very affordable. I was somewhat concerned that it might be flimsy or too light to protect the LED light I wanted to use. But the bracket is well painted, the hole selection matches perfectly with the three holes in the light rim. The bracket is very solid and an excellent weight to last. You will like this bracket if you need to mount a 4 1/2 inch tail/stop/turn light. 15318
Great product. 5938
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