The mounting hole pattern is different on the # T4853100 coupler versus the pattern on the # T4079200 coupler.
As you can see in the attached photos the bolt pattern is closer together on the side of the # T4079200 coupler than on the # T4853100. You may wind up with some of the mounting holes in the same place but you will need to drill new holes for some if not all of the holes.
I have attached a link to a helpful article that explains what is needed to add electric drum brakes to... view full answer...
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