Yamaha - Shaft,propeller - 6L2-45611-00-00Yamaha Propeller Shaft Lower Unit Drivetrain 6L2 45611 00 00 Overview When something feels off in the drivetrainvibration, noise, or uneven powerit can often trace back to the prop shaft. Its a critical piece that takes all the engines output and delivers it straight to the prop. Ive seen bent or worn shafts cause all kinds of issues that dont go away until its replaced. Once you put in a fresh one, everything runs smoother and more balanced right