This part is commonly Used on models:
105-1678 Muffler and Spark Arrester Kit, Liquid-Cooled Z Master Series Mowers
105-1679 Muffler and Spark Arrester Kit, Liquid-Cooled Z Master Series Mowers
105-3633 Muffler and Spark Arrester Kit, Air-Cooled Z Master Series Mowers
74235 Z255 Z Master, With 72"" SFS Side Discharge Mower
74234 Z255 Z Master, With 62"" SFS Side Discharge Mower
74245 Z555 Z Master, With 60in TURBO FORCE Side Discharge Mower
74248 Z500 Z Master, With 52in 7-Gauge Side Discharge Mower
74249 Z500 Z Master, With 60in 7-Gauge Side Discharge Mower