Yamaha - Gear Engine Drive Component 6P3-45571-01-00. Overview. Gears like this are what keep everything moving together the way Yamaha designed it. I've seen engines get noisy or feel off just from a worn gear that wasn't transferring load cleanly anymore. When this part is in good shape, everything runs smooth and quiet, and you don't have to think about what's happening inside. It's one of those components that does its job best when you never notice it.. Key Features. • Precision Gear Engagement - Ensures smooth and consistent transfer of motion within the engine.• OEM Fit and Tolerance - Built to factory specifications for proper alignment with mating components.• Durable Metal Construction - Designed to handle continuous load and resist wear over time.• Supports Smooth Operation - Helps maintain consistent engine performance and mechanical timing.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing internal gear-driven systems. Commonly used across a rang