2 bolts only, or like this
http://www.lehrmangroup.com/rickard/airBagAndBulbs.html
http://bmwe32.masscom.net/sean750/da...usterBulbs.htm


Or:
But be warned, you could break the front plastic of the cluster, and that is not available as single item.
Here we go how it works
http://www.bimmerboard.com/forums/posts/422663
reinstallation
http://www.bimmerboard.com/forums/posts/422658