Briggs & Stratton 27549S Breather Gasket Replaces 27549/555036 Briggs & Stratton 27549S Genuine Briggs & Stratton Breather Gasket Replaces Old Briggs # 27549, 27549S, 555036 For Most 2 - 5 Gross HP 091000 Horizontal Briggs & Stratton Engines