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Carrier Shims

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2. Oftentimes carriers require that the shims be placed between the carrier and bearing. These internal shims will require setup bearings. Setup bearings are loose-fitting dummy bearings that prevent you from having to press your new bearings on and off the carrier, as it may take a few shots to determine the correct number of shims you need. Our Dana 35 rear axle uses external shims, which mount to the outside of the carrier bearing.