Replacement silencer for Briggs & Stratton, Tecumseh & Kohler 9-16 HP engines with muffler with 1" long tube. Pancake Type Threaded On End Silencer Pipe Thread:1" Pipe Thread:1" Fits 9-16 HP Briggs & Stratton, Tecumseh, & Kohler Engines Replaces Briggs & Stratton OE # 392989, Tecumseh OE # 32043B, & Kohler OE # 275679 Pancake Type Threaded On Silencer