Yamaha Lower Unit Assy - 6FK-45300-02-8D. The Yamaha Lower Unit Assy - 6FK-45300-02-8D is engineered for exceptional performance and durability. Crafted with precision, this lower unit assembly ensures smooth and efficient power transfer from your Yamaha outboard motor. Its robust construction and high-quality materials make it resistant to wear and corrosion, ensuring long-lasting reliability in various marine environments.. This lower unit assembly is designed to fit seamlessly with compatible Yamaha outboards, providing optimal functionality and ease of installation. Whether you're replacing a worn-out unit or upgrading your motor, the Yamaha Lower Unit Assy offers improved performance and peace of mind. Trust in Yamaha's commitment to quality and innovation for your marine adventures.. This product has been superseded by: 6FK-45300-03-8D. 6FK-45300-02-8D - LOWER UNIT ASSY