Yamaha Lower Unit Assembly - 66M-45300-11-8D & 66M-45300-13-8D (Open Box) is crafted to provide top-notch performance and reliability for your Yamaha outboard engine. These high-quality lower unit assemblies are engineered for smooth and efficient power transfer, enhancing your boat's handling and overall performance. Built to withstand the toughest marine conditions, they ensure exceptional durability and long-lasting service.. The Yamaha Lower Unit Assembly - 66M-45300-11-8D & 66M-45300-13-8D (Open Box) offers easy installation, allowing for seamless integration with your existing engine setup. Made from corrosion-resistant materials, these assemblies minimize maintenance and extend the lifespan of your outboard motor. Trust Yamaha's dedication to quality and innovation to keep your engine running at its best, providing you with a safe and enjoyable boating experience every time you hit the water.. Yamaha Lower Unit Assembly - 66M-45300-11-8D