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ACL Race Series main bearing set for BMW N63B44 and S63B44 4.4L V8 engines in standard size. This race-oriented main bearing set is specified for the 4395cc V8 DOHC 4‑valve configuration and provides the standard journal sizing needed for rebuilds. The full set covers the main journals for reassembly; use the standard-size option when no undersize machining is required.
ACL BMW N63B44/S63B44 4.4L V8 Standard Size Main Bearings
