Yamaha Lower Unit Assy - 6G1-45300-02-EK. The Yamaha Lower Unit Assy - 6G1-45300-02-EK is expertly crafted to enhance the performance and reliability of your Yamaha outboard motor. This lower unit assembly ensures a perfect fit and optimal functionality, significantly boosting the overall efficiency of your marine engine. Constructed from high-quality materials, it is designed to withstand harsh marine environments, providing exceptional durability and consistent performance.. Experience smooth and efficient power transmission with the Yamaha Lower Unit Assy - 6G1-45300-02-EK, 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 best in all conditions, delivering a reliable and enjoyable boating experience.. This product has been superseded by: 6M8-G5300-00-EK. 6G1-45300-02-EK - LOWER UNIT ASSY