This Genuine Tohatsu Marine Part is a piston ring set in standard size. The part number is 3H6-87123-0. It is a high-quality replacement for your existing piston rings. These rings are designed to fit perfectly and provide optimal performance for your Tohatsu marine engine. They are made from durable materials to ensure long-lasting durability and reliable operation. Whether you are repairing or maintaining your boat's engine, this piston ring set is an essential component to ensure smooth and efficient operation. Upgrade your engine's performance with this Genuine Tohatsu Marine Part.