Spetz, the EPC for the 1994 E220 shows a "vibration absorber" (176) and a "flex joint disc" (179). I'm not sure what the difference is.

https://docs.google.com/fileview?id=0B-WRh0Hf7VdZZDA2YjdiZjMtZDI3NS00YmE3LTgzNTctNDAzOGRkY2MyNjMz&hl=en

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles