While trying to change rear shock mount, the bolt for the lower arm to HuB snapped.
I have a replacement bolt but the old one is seized in the bush !!!
Anyone know where I can get a replacement bush before I cut out the old bush?

 

Any online OEM parts dealer.
But year and model will be needed

 

Welcome to the forum

It's really difficult to suggest how to remove it without and to reuse or not damage the control arm without at least a clear picture of the broken bolt and surrounding chassis parts. . The part diagram is fine but does not show the real area.

 

I would try to drill out the snapped bolt.

 

If the arm isn't threaded ,use a punch and drive it out. Then lube up a new bolt and drive it in and install a new nut . .

 

Did I miss understand what the OP was asking?
From my reading he was asking about where to get a replacement bushing not how to replace it.

 

Ya it is not real clear I suppose can be taken a couple different ways bolt or bushing or both? And forget to post the year of the Mazda?
I may have read it the same way because the bushings are easy to find so I would have answered the removal of the bolt like the others did: That is also why I asked for a picture and not a diagram of the area being worked on.