This Genuine Tohatsu Marine Part is a piston ring set with the part number 3AC-87123-0. It is designed specifically for Tohatsu outboard motors. The piston ring set is an essential component of the engine's piston assembly, providing a tight seal between the piston and the cylinder wall to ensure optimal compression and combustion. This high-quality Tohatsu part is made to meet the manufacturer's specifications and is compatible with various Tohatsu outboard models. It is a reliable and durable replacement part that will help maintain the performance and efficiency of your Tohatsu marine engine.