Sierra 18-7274 Fuel Pump for MerCruiser, OMCFeatures: Mounting gasket included; Flange I.D.: 41241,M73021; Fits: MCM/MIE 898, 228, 250, 255, 260 & 280; For Use On Engine Models: 228 GM S/N 4765100-6218461; 250 GM S/N 4768000-4908849; 255 GM S/N 4175500-UP; 260 GM S/N 4908850-6218461; 280 GM S/N 4176250-UP; 898/198 GM S/N 4762210-6218461; Interchangeable With: MerCruiser; 86246T; 71646; 78485; 86246; 86246A1; Mallory; 9-35417; GLM; 77070; EMP; 35-35274; OMC Stern Drive; 509409;