I went through several of these and then I wne to the Mercedes dealer and bought the OEM bolts. They snapped, too.

I then bought some more bolts from Mercerdes and took them to a bolt dealer in Dallas and purchased a brand of bolt called 'Unbreako' that are rated at 350,000 pounds of force. They used the OEM bolts to make sure I had the right size, length and threads.

This is a very common problem on all 114 and 115 cars. After 40 years these bolts have had a lot of stress put on them and do need to be replaced.

Pooka