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ACL Race Series main bearing set for BMW B58B30 and S58B30 3.0L inline‑6 engines. Supplied in .25mm (0.010") sizing, this main bearing set matches engines specifying that journal size and is intended for rebuild or machining applications where precise clearances matter. The full main bearing set provides the necessary main shells for reassembly; choose the correct undersize when replacing factory bearings.
ACL BMW B58B30/S58B30 3.0L Inline 6 .25mm Oversized Main Bearings
