O.S. Engines 45525030 F5020 Muffler Assembly for FS120 FEATURES: Silver color Standard surpass style muffler Threaded exhaust header with retaining nuts Filed flats for gripping with a wrench INCLUDES: Threaded exhaust header with two retaining nuts (one at each end) header has 45 degree bend at half point (OSMG5754) Threaded muffler (OSMG