Broken water pump bolt removal

The lower 2 bolts go into the timing cover as does the top center bolt The 4 side bolts go threw the cover and into the block. if it is a side bolt they usually break off do to being froze in the cover from aluminum oxidation. If you get the cover off the bolt should spin out fairly easy. Yes sometimes they do break at the block but not as often as in the cover. The bolts are a special size and fall between sizes you can buy. The lower cover bolts can damage the cylinder wall if they are to long. care should be taken on replacement of all bolts. I have the bolts if needed and covers. Steve