Briggs & Stratton 393010 393010S low-tone two-step type. Fits 9, 9B, 9F, 100200, 130200, 131200 (5 hp horizontal); 170499, 170700, 171700, 171706, (7 hp horizontal); 190400, 190799, 195400 series hp horizontal. Fits 7 & HP engines. 170400, 170700, 190400, 190700 serpes 3-1/8" OD x 5-3/8" length Replaces: BRIGGS & STRATTON 393010 BRIGGS & STRATTON 393010S