4 Yanmar SD50 Saildrives Available Great for Boat Projects Spares! I have 4 Yanmar SD50 saildrives available for sale. Condition 2 units fitted with a brand-new cone and new oil seal 2 units are in working condition Different units available depending on your needs and budget Price depends on which gear/unit you choose. Ideal for replacement, refit, spare parts, or your next boat project. Send me a message for photos, details, and pricing. Serious inquiries welcome!