The Toro 131-1184 Lawn Mower Muffler helps reduce engine exhaust noise while directing exhaust gases safely away from the engine. It supports the mower's exhaust system by managing the flow of gases during operation. Replacing a damaged or worn muffler can help maintain proper exhaust function and reduce excessive operating noise. Check your Toro mower model and parts diagram to confi... https://www.wholetoolbox.com/toro-131-1184-lawn-mower-muffler/131-1184.html