This Genuine Tohatsu Marine Part is a flywheel with a ring gear. It is designed specifically for Tohatsu outboard motors and is a crucial component in the engine's ignition system. The flywheel is responsible for storing and releasing energy to power the engine's spark plugs, while the ring gear ensures smooth engagement with the starter motor. With the part number 3SS-06191-0, this Tohatsu flywheel is a reliable and high-quality replacement option for maintaining optimal performance and reliability in your marine engine.