Yamaha Lower Unit Assy 6H1-45300-A5-8D - Enhance your boat's performance with the Yamaha Lower Unit Assy 6H1-45300-A5-8D. Designed to deliver superior power transmission, this lower unit assembly ensures smooth and reliable operation in various marine conditions.. The Yamaha Lower Unit Assy 6H1-45300-A5-8D is constructed from premium materials, offering excellent durability and resistance to corrosion. Its precise engineering guarantees a perfect fit and easy installation, making it an ideal choice for both recreational and professional boaters.. 6H1-45300-A5-8D - LOWER UNIT ASSY