Yamaha Inner Gunwale - F3X-U2519-D0-00. Factory-Original Gunwale Panel for Side Interior Support. The Yamaha - Inner, Gunwale - F3X-U2519-D0-00 is a genuine Yamaha OEM component engineered to fit seamlessly along the inner side of your boat's gunwale. Whether you're performing a repair or refreshing your vessel's interior, this part delivers both strength and visual uniformity with Yamaha's original manufacturing standards.. Designed to maintain the form and function of your boat's side structur