Yamaha - Propeller Shaft Drivetrain Component 6J8-45611-00-00. Overview. The Yamaha Propeller Shaft 6J8-45611-00-00 is one of those core parts that takes everything your engine produces and turns it into actual movement in the water. When this shaft is even slightly bent or worn, you'll feel it right away through vibration or uneven performance. It sits at the heart of the lower unit, handling constant load every time you throttle up. If you're dealing with damage from impact or wear over time, replacing it is key to getting your motor running smooth again.. Key Features. • Direct Power Delivery - Transfers engine torque straight to the propeller for efficient thrust.. • OEM Fit Precision - Built to Yamaha specifications for proper alignment and smooth rotation.. • Vibration Reduction - Helps maintain balanced operation and reduces unwanted vibration.. • Heavy-Duty Construction - Designed to handle continuous load, torque, and harsh marine conditions.. Compatibility. Compatible with se