realoem lists that bolt for $22 or so, which usually means you can find it at dealer for about that cost or online for about 40% less.
Try bmaparts.com bavauto.com and search the 'incolnel' bolt thread...there was a big fight...many just use good grade bolts...not sure how good an idea that is, but in the scheme of things, could be worse!
I'm so depressed. No one wants to come see me in NYC: Sat, Oct. 8, 6 p.m. at Greenwich Village Comedy Club.
Mangofy your E46!