Yamaha Lower Unit Assy - 6FH-45300-11-NA. Enhance your boating performance with the Yamaha Lower Unit Assy - 6FH-45300-11-NA. This lower unit assembly is designed for maximum durability and efficiency, ensuring your Yamaha outboard operates smoothly and reliably in a range of marine environments. Its precision engineering provides optimal power transfer and gear ratio, offering robust and consistent performance. Built from premium materials, this assembly is crafted to withstand the toughest marine conditions, guaranteeing long-lasting use and dependability.. The Yamaha Lower Unit Assy - 6FH-45300-11-NA is compatible with a variety of Yamaha outboard models, providing versatility and ease of installation. Its sturdy construction ensures reliable functionality, making it an essential component for dedicated boaters. Trust in Yamaha's renowned engineering and commitment to quality with this superior lower unit assembly, designed to enhance the performance and reliability of your outboard