Yamaha Lower Unit Assy - 6G5-45300-2A-8D. The Yamaha Lower Unit Assy - 6G5-45300-2A-8D is meticulously engineered to provide superior performance and reliability for your Yamaha outboard motor. This lower unit assembly ensures a precise fit and optimal functionality, significantly enhancing your marine engine's overall efficiency. Constructed from high-quality materials, it is designed to withstand the toughest marine conditions, offering exceptional durability and consistent performance.. Experience smooth and efficient power transmission with the Yamaha Lower Unit Assy - 6G5-45300-2A-8D, which minimizes drag and maximizes thrust. This results in 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, providing a reliable and enjoyable boating experience.. This product has been superseded by: 6G5-45300-2B-8D. 6G5-45300-2A-8D - LOWER UNIT ASSY