Educate me please. These are the bushings that would sit intop the hydraulic rams? I have a thump in my back end that I attribute to the diff mount. But in cars past, I have found the shock absorber mounts can go bad too. I have replaced a few of them. But not in the Benz. Would you also have part numbers handy?

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car