Yamaha - Gear Engine Drive Component 6N0-G5571-00-00. Overview. Gears like this don't get much attention until something starts sounding off. I've opened up engines where a worn gear caused noise, vibration, or just that rough feel under load. When everything's in spec, the motor runs quiet and smooth, and power transfers without hesitation. It's one of those internal parts that keeps everything working together the way Yamaha intended.. Key Features. • Precision Gear Engagement - Ensures smooth interaction with mating components.• OEM Machined Fit - Built to Yamaha specifications for accurate alignment and performance.• High-Strength Construction - Designed to handle continuous engine load and stress.• Supports Smooth Operation - Helps maintain consistent and quiet engine performance.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing internal gear-driven systems. Commonly used across a range of Yamaha outboards where reliable power transfer and durability ar