Yamaha Lower Unit Assy - 6EH-45300-02-NA. The Yamaha Lower Unit Assy - 6EH-45300-02-NA is designed to elevate the performance and durability of your Yamaha outboard engine. This genuine Yamaha part is crafted with precision to ensure a perfect fit and seamless integration with your engine system. Constructed from high-quality materials, it provides exceptional strength and resilience, making it ideal for enduring the demanding conditions of both freshwater and saltwater environments.. Experience enhanced power transmission and reliable performance with the Yamaha Lower Unit Assy - 6EH-45300-02-NA. Engineered to deliver smooth and efficient operation, this lower unit assembly exemplifies Yamaha's commitment to quality and innovation. Whether you are cruising, fishing, or participating in water sports, trust this robust component to keep your outboard engine running optimally, ensuring a seamless and enjoyable marine experience.. This product has been superseded by: 6EH-45300-03-NA. 6EH-