A-B1691963-AI SEAL-VALVEOne New Aftermarket Replacement Valve Seal Fits Briggs and Stratton (Fits Briggs & Fits Stratton) Small Gasoline Engines This valve stem seal fits over the valve stem in the cylinder head of Fits Briggs and Stratton small gasoline engines. It prevents oil from migrating past the valve stem and into the combustion chamber, helping maintain compression, reduce oil consumption, and minimize exhaust smoke. The seal is sold individually and is commonly