Yamaha Lower Unit Assy 6HK-45300-03-NA - Ensure peak performance for your outboard motor with the Yamaha Lower Unit Assy 6HK-45300-03-NA. This top-quality lower unit assembly is crafted for durability and dependable operation in diverse marine conditions.. The Yamaha Lower Unit Assy 6HK-45300-03-NA features robust materials and meticulous engineering, making it resilient to challenging environments. It is easy to install, offering enhanced functionality and longevity for your marine engine.. 6HK-45300-03-NA - LOWER UNIT ASSY