Yamaha Pump Driven Gear 6U1-13325-00-00. Overview. The Yamaha Pump Driven Gear 6U1-13325-00-00 is a genuine original equipment manufacturer component designed to receive and transfer power within the engine's pump system. Working in coordination with the pump drive gear, this component ensures smooth and efficient operation of critical systems such as lubrication or cooling.. Engineered to Yamaha's exact specifications, this pump driven gear provides a precise fit and dependable durability. It i