---

Jim -

Let me say, welcome to the club. There are thousands of us. It sucks when it happens but it always comes out okay in the end. The water pump housing is the 2nd most favored place to break a bolt.

If you have part of the shaft exposed, consider taking a dremel (or hacksaw) and cutting a slot. Not too wide but deep for a long shafted flat head screw driver. Soak that puppy in PB Blaster a day or two (visit and recoat 2x day.) Give it a turn. If no joy, do as Binkie says: heat it with a propane (not MAP) torch you can buy at the hardware store. Let it heat up for 10 minutes. Give it a try, if no success, reheat again. Many times the combination of heating, cooling in conjunction to the PB Blaster does the trick.

If the head is inside the threaded section, you can try an easy-out extractor. These are a reverse threaded drill bit. They work but you have to use gentle but firm pressure . Too much force will break the extractor.

If all of this is too much to bear, check you local mechanic shop. They break bolts all the time.