The ACL main bearing set for Ford 351M/351W engines (1969–1976) is listed as an alternative full-groove set to part 5M1432A. It supplies the matched crankshaft main shells required for engine rebuilds and specifies compatibility as an alternative to that OE-style kit. Use this set when a full-groove main bearing configuration is needed for 351M/351W applications.
ACL Ford Prod. V8 351M-351W 1969-76 Engine Crankshaft Main Bearing Set