This is an authentic OEM sourced replacement recoil starter assembly which is specially designed for use with Subaru / Robin engines commonly installed on lawn and garden equipment. It is the assembly which allows a user to pull-start the engine, over time any of the components may wear out and begin to fail eventually requiring a replace...Read morement. It is a complete assembly which includes the durable plastic housing, the starter pulley, the starter spring and the pull rope with the grip, please note the hardware to secure it is sold separately.