Yamaha Lower Unit Assembly - 6H1-45300-16-EK. The Yamaha Lower Unit Assembly - 6H1-45300-16-EK is expertly crafted to provide top-tier performance and reliability for your Yamaha outboard motor. This genuine Yamaha part ensures a precise fit, allowing for smooth and efficient operation. Constructed from premium materials, this lower unit assembly is built to withstand the demanding conditions of marine environments, ensuring long-lasting durability and dependable performance on the water.. Enhance your boating experience with the Yamaha Lower Unit Assembly - 6H1-45300-16-EK. Its robust construction and advanced engineering make it an excellent choice for maintaining or improving your outboard motor's functionality. Trust in Yamaha's dedication to quality and enjoy seamless boating with this reliable lower unit assembly, designed to keep your marine adventures running smoothly and efficiently.. This product has been superseded by: 6H1-45300-17-8D. 6H1-45300-16-EK - LOWER UNIT ASSY