I had my 300e 5 speed in the shop for flex disk repairs. The mechanic said that a vibration dampner on the driveshaft was broken. It was a rubber and steel ring on the shaft that only the manual transmission cars have. The part is not available separately; it only comes with a new driveshaft. Since the new flex disks were installed, I notice a vibration at various speeds in 1st or 2nd gear, no others. I have a driveshaft center support bearing that I can install, but I'm wondering how important the driveshaft dampner is. Should I check the costs of a driveshaft? I don't think that I could ever find a used one due to the rarity of my car.

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VR
1967 250SL

I really have no advice to offer, but since I'm one of the few here with one of these cars I thought that I'd chime in. I was not aware of such a vibration damper. By the end of next week my car will have 200,000 miles and have never done anything to the driveshaft.

From this description, though, it would seem that this damper would not be very important unless part of it is missing causing an imbalance or if there is something else wrong with the driveshaft causing a vibration for this device to suppress.

Please keep us informed.

My $0.02,