Yes, they are the swaybar bushings. The bushing you see in the pic of the item is pressed into the alum arm. The swaybar bushings see alot of wear.. I think I paid $7ea (need a total of 4) 2 years ago.....

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Over 21 years I owned several:
w108
w110
w111
w115
w116
w123
w124
w126
w212