Yes , they are vibration dampeners...same as the thing on the rear axle.
They are there for a reason, I'm sure.
The sacrificial anode thing made me chuckle, but it is a plausible enough guess.
91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35@3.07
12 Cherokee 4x4,3.7L,42RLE/MP1522, D30Mfirstname.lastname@example.org
"Non Vi Sed, Arte"