Yamaha - Propeller Shaft Lower Unit Power Transfer 6EG-G5611-00-00. Overview. When something goes wrong with a prop shaft, you feel it right away-vibration, noise, or just not getting the push you expect. I've seen bent or worn shafts cause all kinds of issues in the lower unit, especially after a hard strike. This is the piece that actually delivers power to the prop, so it has to be straight, strong, and true. When it's right, everything runs smooth and balanced in the water.. Key Features. • Direct Power Transfer Design - Delivers engine torque efficiently to the propeller.• Precision Machined Shaft - Ensures proper alignment and smooth rotation within the lower unit.• Heavy-Duty Metal Construction - Built to withstand load, impact, and long-term use.• Stable Propeller Mounting - Provides secure support for consistent prop performance.• Exact Yamaha Fitment - Matches factory specifications for proper installation and operation.. Engine & Boat Compatibility. Designed for Yamaha outbo