Out of all the W124s I've owned, I've only had to do one.

I know of two other W124s that local MBCA members own that did require new diff mount bushings, though.

Rear end gets squirrely under power when shifting, and you hear a clunk.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles