unkl300d, if you live near a MB dealer order the bushings there and compare with those from an online source. If the MB bushings are identical, return them and use the less expensive ones. You could also try buying the bushings at wholesale price from a MB dealer such as MB of Cincinnati.

For that type job you want to use the highest quality part available so you are not paying a shop to repeat the work in short order because the inexpensive part failed. Most shops prefer/demand that you buy parts from them since they make money on the parts also.

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Fred Hoelzle