Yamaha - Lower unit assy - 6EH-45300-12-NAYamaha Lower Unit Assy 6EH 45300 12 NA The Yamaha Lower Unit Assy 6EH 45300 12 NA is engineered to enhance the performance and longevity of your Yamaha outboard engine. This genuine Yamaha part ensures a perfect fit and smooth integration with your existing engine components. Built with high quality materials, it offers exceptional durability and strength, capable of enduring the rigorous conditions of both freshwater and saltwater environments.