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, indicating that it is slightly larger than the standard size. The part number for this set is 3GF-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 efficient power delivery. Made with high-quality materials, this Genuine Tohatsu Marine Part guarantees durability and reliable performance, making it an ideal choice for maintaining and repairing your Tohatsu outboard motor.