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ACL Race Series main bearing set for BMW N63B44 and S63B44 4.4L V8 engines in .25mm (0.010") sizing. This main bearing set is intended for engines machined to that undersize and supplies the full set of main shells needed for reassembly during an overhaul or rebuild. Select the .25mm option when your crankshaft journal specification requires that dimension.
ACL BMW N63B44/S63B44 4.4L V8 .25mm Oversized Main Bearings
