Just a tip, don't over tighten these bolts. They thread into an aluminum head and strip easily. An unaware mechanic will sometimes try to get a leaky valve cover to seal by torqueing these down harder. The hold down bolts have a shoulder that rests on the top of the head. (easily seen in the picture) More torque does not equal more hold down force, but may result in stripped threads. Only new "squish washers" (yes, a very technical term....) will provide the proper hold down force. On one of my 104s, I had to put in several heli coil inserts to repair damage by a previous mechanic.

J. M. van Swaay

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1994 E320 Wagon, 230,000 miles
1995 E320 Sedan, 106,000 miles
1994 E500 Sedan, 79,000 miles