The Briggs & Stratton 793647 Piston Assembly helps convert combustion pressure into mechanical motion within compatible Briggs & Stratton engines. The piston moves up and down inside the cylinder, working with other engine components to support the combustion cycle and power generation. It is a practical replacement for a worn or damaged piston assembly that may contribute to reduced ... https://www.wholetoolbox.com/briggs-stratton-793647-piston-assembly/793647.html