Yamaha Lower Unit Assy - 6G9-45300-14-EK. The Yamaha Lower Unit Assy - 6G9-45300-14-EK is expertly engineered to enhance the performance and reliability of your Yamaha outboard motor. This lower unit assembly ensures a precise fit and optimal functionality, significantly improving the overall efficiency of your marine engine. Made from premium materials, it is built to withstand the toughest marine conditions, providing long-lasting durability and consistent performance.. With the Yamaha Lower Unit Assy - 6G9-45300-14-EK, you can experience smooth and efficient power transmission that minimizes drag and maximizes thrust. This results in better fuel economy and a smoother ride on the water. Trust in Yamaha's commitment to quality and innovation with this lower unit assembly, ensuring your boat operates at its peak in all conditions, delivering a reliable and enjoyable boating experience.. This product has been superseded by: 6G9-45300-16-EK. 6G9-45300-14-EK - LOWER UNIT ASSY