E46Fanatics - View Single Post - Downpipe to main exhaust, studs or bolts?
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Old 09-30-2012, 02:10 PM   #6
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Originally Posted by Earendil View Post
The problem is that #6 there is a hex head, which mine do not have. Mine are flat heads with a notch that prevents them from spinning. It's also not clear where that hex bolt is supposed to go by looking at that diagram. I searched by vin and I get the same diagram. Maybe I'll just take a BFH to it and see if I can get it to pop out despite the rust. If so I can try to thread and length match it.
I should have been more precise with my previous post. The stud is pressed in place, so if it fails, you have to knock it out. The BMW replacement is a hex head bolt with some very unique dimensions to line up in the exhaust manifold where the stud used to be. The replacement part is not a direct replacement, but more of a factory designed repair solution.

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