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The ACL main bearing set fits Oldsmobile V8 engines covering 260, 307, 350 and 403 displacements for 1964–1990 applications, supplied as a full crankshaft main bearing kit. It provides matched main shells to support crankshaft journals and re-establish proper bearing clearances during rebuilds. Suitable for maintenance, rebuilds, and restoring correct bottom-end geometry.
ACL Olds. V8 260-307-350-403 1964-90 Engine Crankshaft Main Bearing Set
