Does anybody know what size socket driver I need to remove the head bolts in a 104 engine

12 mm 12-point (also called triple-square) . See also : http://www.peachparts.com/shopforum/tech-help/147315-my-head-gasket-replacement-notes-long-m104-95-e320.html

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Prost!

Tanks for the information I was going to buy a 10 mm