Yamaha - Shaft, propeller - 68W-45611-00-00Yamaha Propeller Shaft Lower Unit Drive Component 68W 45611 00 00 Overview When a prop shaft gets even slightly bent or worn, youll feel it every time you run the boat. The 68W 45611 00 00 is built to keep everything spinning true and transferring power clean to the prop. Its one of those parts you dont think about until something feels offthen it becomes critical. Replace it with the right OEM shaft, and youre back to smooth, vibration free