Yamaha Lower Unit Assy - 6G8-45300-25-EL. The Yamaha Lower Unit Assy - 6G8-45300-25-EL is 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 designed to withstand the toughest marine conditions, providing exceptional durability and consistent performance.. Experience smooth and efficient power transmission with the Yamaha Lower Unit Assy - 6G8-45300-25-EL, which minimizes drag and maximizes thrust. This results in better fuel economy and a smoother ride on the water. Trust in Yamaha's dedication 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 This product has been superseded by: 6G8-45300-26-EL. 6G8-45300-24-EL - LOWER UNIT ASSY