Screw extractor | easyout | broken bolt removal
Why Motor Vehicle Maintenance & Repair Stack Exchange recommends it
Mechanics Stack Exchange answerers point people to it as a quick visual walkthrough when someone needs to remove a snapped bolt, such as from an intake manifold or suspension.
Recommended by 3 people across 3 different months, 2013 to 2015.
What it is
A short hands-on demonstration by Ultimate Handyman of how to use a screw extractor (also called an Easy Out) to remove a broken bolt or stud from a tapped hole. It shows the process on a bolt broken off in a shaft.
What people said
Recommends Mike Saull · 2013-03 · Motor Vehicle Maintenance & Repair Stack Exchange · on “Removing badly rusted and broken bolt from suspension”
Get a real drill and drill a pilot hole in the center. Then use an easy out drill bit with the drill in reverse to bite into the bolt and rotate it out. [this video]
Recommends Pᴀᴜʟsᴛᴇʀ2 · 2014-04 · Motor Vehicle Maintenance & Repair Stack Exchange · on “Is there a way to remove a broken screw?”
Probably, the easiest way to extract the screw is with a screw extractor. Here is a video on [this video] which should explain it pretty good for you. Basically so you know, you drill out the bolt, then put the screw extractor in the hole, then unscrew the broke part. You have to be very careful with your drilling, but this is about the only way you have to get it out besides replacing the entire thing as you've suggested. There are several different types, but the most recognized name brand is the Easy Out.
Recommends Zaid · 2015-09 · Motor Vehicle Maintenance & Repair Stack Exchange · on “Best way to remove broken bolt from intake manifold (broke nearly flush)?”
I would say the best option here would be to use a screw extractor, which will involve some drilling. The steps to using it are as follows: carefully drill a pilot hole in the bolt twist the screw extractor into the hole The left-handed thread of the screw extractor will have the effect of loosening the bolt as you try to force it into the hole. Here is a 5-minute video [this video] on how to use a screw extractor.