A-B1694040-AI CAMSHAFTOne New Aftermarket Replacement Camshaft Fits Briggs & Fits Stratton Small Engines This aftermarket replacement camshaft fits a wide range of Fits Briggs & Fits Stratton (B&S) small engines used in lawn mowers, pressure washers, snow blowers, and other outdoor power equipment. The camshaft controls the opening and closing of the engine's intake and exhaust valves, governing valve timing and ensuring proper combustion for reliable engine performance.