Briggs & Stratton 271866S Cylinder Head Gasket Replaces 271866/271075/271866S Briggs & Stratton 271866S Genuine Briggs & Stratton Cylinder Head Gasket Replaces Old Briggs # 271866, 271075, 271866S Fits Most 10, 10.5, 11.5, 12, 13 & 13.5 Gross HP 250000, 256000 Horizontal & Vertical Briggs & Stratton Engines