A-B1845486-AI HEAD-CYLINDEROne New Aftermarket Replacement Cylinder Head Fits Briggs & Fits Stratton Small Engines This aftermarket replacement cylinder head Fits Briggs & Fits Stratton small engines commonly used in lawn mowers, riding mowers, and outdoor power equipment. The cylinder head seals the top of the engine block, housing the valves and combustion chamber to manage compression, combustion, and exhaust. Replacing a warped, cracked, or worn cylinder head restores