This Genuine Tohatsu Marine Part is a piston ring set that is designed specifically for Tohatsu outboard motors. It has an oversize measurement of 0.5, which means it is slightly larger than the standard size to accommodate for wear and tear. The part number for this set is 3G0-87124-0. These piston rings are essential components in the engine's combustion chamber, providing a tight seal between the piston and cylinder wall to ensure optimal compression and power. Made with high-quality materials, this Genuine Tohatsu Marine Part guarantees durability and reliable performance for your marine engine.