91-12346-3 Pinion Tool Disc #3 - Overview. The 91-12346-3 Pinion Tool Disc #3 is a specialized tool designed for the Honda marine drive system. It supports the pinion assembly in Honda marine engine systems. Essential for assembly and maintenance tasks, this tool ensures proper integration and function of the drive system components. Precision-engineered to meet factory specifications, it guarantees seamless compatibility with Honda marine equipment, maintaining optimal performance and reliabili