On mine the step end was the one that broke( left hand thread). Because the helm bracket is the same on both ends, whoever installed it originally could have installed it with the left hand thread at the motor just as easily as the step. I had to drop the motor and motor bracket to get the complete helm joint bracket out.
Like many things, if I had know how it worked when I started I could have changed out just the step end without having to remove the whole bracket and motor assembly.
If you want to be sure you could order both the of the ends. Another thought, you can take the part in the picture and see if you can screw it on a standard 3/8 bolt. If you can, you have the right had version, if not, then the left hand is what you need.
I was able to find the right hand version at a couple of auto parts stores and one hardware store but no one had the left hand version.
Keep me posted
Dennis and Beth Baker
2011 Phaeton 40 QBH,Toyota 4Runner, FMCA