A-B1844787-AI VALVE-EXHAUSTOne New Aftermarket Replacement Exhaust Valve Fits Briggs & Fits Stratton Small Engines This aftermarket replacement exhaust valve Fits Briggs & Fits Stratton (B&S) small gasoline engines used in lawn mowers, lawn tractors, and other outdoor power equipment. The exhaust valve seats in the cylinder head and controls the release of combustion gases from the engine cylinder, and must be in good condition for proper compression, engine performance, and