COMP Cams Steel Retainers 1.437inSuper Lock Steel retainer is precision machined from 4140 chromemoly Steel and finished in black oxide. This precision retainer is specifically designed for positive location when combined with COMP Cams high quality valve springs. User 1 This Part Fits: Year Make Model Submodel 1982 1989 Buick Century Custom 1984 Buick Century Estate 1985 1989 Buick Century Estate Wagon 1982 1989 Buick Century Limited 1984 Buick Century Olympia Limited 1980 1982