Briggs & Stratton Briggs & Statton Lawn & Garden Equipment Engine Oil Drain Plug 794903 Genuine OEM. This is a Genuine OEM Briggs & Stratton part. This oil drain plug (part number 794903) is for lawn and garden equipment engines. Oil drain plug 794903 seals the oil drain hole at the bottom of the engine. Let the engine cool and disconnect the spark ... - Briggs & Stratton Briggs & Statton Lawn & Garden Equipment Engine Oil Drain Plug 794903 Genuine OEM.