Yamaha Lower Unit Assy - 6G8-45300-12-EL. The Yamaha Lower Unit Assy - 6G8-45300-12-EL is designed to enhance the performance and reliability of your Yamaha outboard motor. This lower unit assembly ensures a precise fit and optimal operation, significantly improving your marine engine's overall efficiency. Constructed from high-quality materials, it is built to withstand the harshest marine environments, providing exceptional durability and consistent performance.. Experience smooth and efficient power transmission with the Yamaha Lower Unit Assy - 6G8-45300-12-EL, which minimizes drag and maximizes thrust. This leads to improved 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 This product has been superseded by: 6G8-45300-13-EL. 6G8-45300-12-EL - LOWER UNIT ASSY