I think waterdiesel has it correct with the lugbolts, but I sure don't see the point of buying a used control arm and used bearing and dealing with the spring for more money than a new set of bearings.

It will take a special tool to do the bearings, but break down and let your local tech feed his kids instead of going to so much trouble to install a used bearing.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician