The Ariens Company 20001494 Snow Blower Cylinder Head Assembly W/Gasket is a replacement engine component designed for compatible Ariens snow blower equipment. It works by enclosing the top of the engine cylinder and supporting proper combustion chamber sealing, while the included gasket helps create a secure seal between mating surfaces. Replacing a damaged cylinder head or worn gask... https://www.wholetoolbox.com/ariens-company-20001494-snow-blower-cylinder-head-assembly-w-gasket/20001494.html