The Briggs & Stratton 796476 is a genuine OEM breather cover (also referred to as a “cover-breather/reed”). This component is part of the engine’s crankcase ventilation system, specifically housing the reed valve that allows the engine to “breathe” by managing internal air pressure. Genuine OEM Part The Briggs & Stratton 796476 Breather Cover is the factory-original replacement. It is essential for preventing oil leaks and maintaining proper crankcase vacuum. If this cover is cracked or the internal reed is damaged, you may notice oil leaking from the breather area or blue smoke in the exhaust due to improper pressure management.