Yamaha Pump Drive Gear 6U1-13324-00-00. Overview. The Yamaha Pump Drive Gear 6U1-13324-00-00 is a genuine original equipment manufacturer component designed to transmit power to the engine's pump system. This gear plays a critical role in ensuring proper operation of the pump, supporting essential functions such as lubrication or cooling depending on the system design.. Engineered to Yamaha's exact specifications, this pump drive gear provides a precise fit and dependable performance. It is an i