Briggs & Stratton 808988 Lawn Mower Breather Assembly

The Briggs & Stratton 808988 Lawn Mower Breather Assembly regulates internal crankcase pressure by allowing controlled release, and recirculation of gases through a filtration pathway that separates oil vapors from air before redirecting flow back into the intake system. It operates using a valve and baffle arrangement that responds to pressure changes inside the engine maintaining balanced airflow movement during combustion cycles. It is installed on the engine crankcase housing of lawn mower assemblies, positioned near the valve cover area where it connects with breather hoses and intake routing components within the upper engine structure.