This Genuine Tohatsu Marine Part is a piston with an oversize of 0.5. It is specifically designed for Tohatsu outboard motors and has the part number 3R0-00004-0. This high-quality piston is a crucial component for the engine's combustion process, ensuring optimal performance and efficiency. It is made with precision and durability in mind, guaranteeing a long-lasting and reliable operation. Whether you are replacing a worn-out piston or upgrading your engine, this Genuine Tohatsu Marine Part is the perfect choice for maintaining the performance and longevity of your Tohatsu outboard motor.