Yamaha Lower Unit Assy 6GS-45300-25-8D - Enhance your marine engine's performance with the Yamaha Lower Unit Assy 6GS-45300-25-8D. This high-quality lower unit assembly is engineered to provide optimal power transfer and smooth operation, ensuring a reliable and efficient boating experience.. The Yamaha Lower Unit Assy 6GS-45300-25-8D is built with durability and longevity in mind, making it perfect for both recreational and professional use. Its robust construction and easy maintenance guarantee that your engine will perform at its best, giving you confidence on the water.. This product has been superseded by: 6GS-45300-26-8D. 6GS-45300-25-8D - LOWER UNIT ASSY