The MTD 951-9986A Muffler helps manage engine exhaust and reduce the noise produced during operation. Installed as part of the engine’s exhaust system, this muffler directs exhaust gases away from the engine while helping dampen sound from combustion. A properly functioning muffler supports normal equipment operation and helps maintain the intended exhaust setup. Replacing a worn or d... https://www.wholetoolbox.com/mtd-951-9986a-muffler/951-9986A.html