We won't have information on the size of the bolt. The best thing to do its to get what is called an, "Easy Out" kit from your local harware or auto parts store and see if that will remove it and then you can match it at a harware store. Otherwise you will have to drill it out. You will probably need a Helicoil kit to repair the threads.

Answered by DrCranknWrench (expert)
3,292 answers provided