Rotary 6725. FITS BRIGGS & STRATTON 10-12 HP MODELS: 251000, 252000, 280700 SERIES. FITS *10 HP MODEL 222416, *11 HP MODEL 252412, 11 HP IC MODELS 253702, 255427, 14 HP IC MODELS 400437, 400407, 16 HP IC MODEL 402417, 18 HP IC MODELS 421700 & 422700. INCLUDES ROTA