[Efthreeoh]

My research shows the bolt is an M8 x 1.25 pitch. To retap the hole you'll need a blind-hole, or bottoming M8x1.25 tap. A through-hole tap, which are the most commonly sold, will not fully tap the hole in the block. A thread chasing tap should be a blind-hole tap configuration.

The bolt set P/N is 11132210959. FCP Euro shows the bolt size as M8x1.25 in several lengths. As stated, use a chaser not a tap unless it is a bottoming tap. You should have the old bolts to check against. I recommend that any good tool set have a bolt size gauge kit. Hint hint.