13111-ZW9-000 Piston Pin - Overview. The 13111-ZW9-000 Piston Pin is a critical component in Honda marine engine systems, specifically designed to connect the piston to the connecting rod within the engine assembly. This precise pin plays a vital role in enabling the piston to articulate smoothly, ensuring efficient transfer of power during the internal combustion process. Engineered to meet Honda factory specifications, it ensures seamless integration with existing parts, maintaining optimal pe