King 1990+ General Motors 231 CI V6 OHV Crankshaft Main Bearing SetSet contains additional lower shells to fit different applications: For engines up to 1994 use lowers: M 480L1 X 1, M 480 L X 2, For engines 1994 1995 use lowers: M4018L X 1, M 480L X 2, For engines 1995 2004 use lowers: M 480L X 1, M4018L X 2, M41 This Part Fits: Year Make Model Submodel 1989 1993 Buick Century Custom 1989 Buick Century Estate Wagon 1989 1993 Buick Century Limited 1991 1993 Buick Century Special 1988 1989 Buick Electra Estate Wagon