Yamaha Lower Unit Assy 6HB-45300-01-8D - Ensure your boat's peak performance with the Yamaha Lower Unit Assy 6HB-45300-01-8D. This high-quality lower unit assembly is engineered for durability and efficiency, providing reliable performance in various marine conditions.. The Yamaha Lower Unit Assy 6HB-45300-01-8D features superior construction and premium materials, offering excellent resistance to wear and corrosion. Its precise design and easy installation make it a top choice for maintaining your boat's optimal functionality and longevity.. 6HB-45300-03-8D - LOWER UNIT ASSY