I have a deadbolt that I would like to replace. On each side of the door it looks like:
Does one buy two of these for a door or is this another product?
Doors – Should I purchase two lock cylinders to create a double-sided lock
doorslock
Related Solutions
You need to remove the key set section as pictured on the left. It may be very corroded and require a bit of persuasion to split the halves and remove from the deadbolt assembly. Once you have removed the keyway from both sides, there should be nothing but a couple of screws on the striker/jam plate holding the bolt assembly.
Aside from replacing the door, you can purchase and install reinforcement kits for your door and jamb.
EDIT: These are also known as door wrap around plates.
As you can see, it contains a metal bracket that fits around the door. Some just protect the edge while other models extends a few more inches over the door and covers the holes for the dead bolt and handle.
Look around at your local home improvement store or call a local lock smith.
Get a new high security dead bolt while you are at it.
Best Answer
Assuming that you want to replace the deadbolt unit (as stated in the question), usually the most economical option is to remove the entire assembly including the faceplates, keyed cylinders, and the deadbolt itself (the part that inserts into the edge of the door) and replace all with a new unit.
Another option is to have the two cylinders rekeyed, if a new key is all that is desired.
Your picture, which looks like it was grabbed from the web rather than being an actual photo of your lock, shows a specialty commercial style lock cylinder. If it is a true representation of your hardware you should visit a locksmith or commercial door and lock supplier.