[mountain14er]

While replacing the oil filter housing gasket on my 2007 328xi I checked the "external" head bolt right in the same area. It's shown in by the green arrow on Figure 1 here:

http://www.pelicanparts.com/BMW/tech...lt_Testing.htm

by some miracle, the bolt was loose but not broken. I purchased the parts to replace the bolt but noticed the bolt pack has 4 bolts. These are different than the full 14 bolts holding on the head. I haven't been able to find where the other 3 bolts in the 4 bolt pack are located. does anyone have a diagram to where they are? I want to check them while working on the loose one. Any other suggestions of what to check while I'm in there?

Thanks.

[Denny347]

The rest are under the valve cover. They are not technically head bolts, they are the timing chain bolts...or something like that. Mine did that back in 2011, had them replaced which required the valve cover gasket replacement. They found several bolts broken under the VC.