Yamaha - Throttle Body Assembly Air Intake Control Component 6FM-13750-00-00. Overview. The Yamaha Throttle Body Assembly 6FM-13750-00-00 is what really controls how your engine responds when you move the throttle. When this starts to get dirty, worn, or out of sync, you'll feel it right away-hesitation, uneven acceleration, or a rough idle. It manages the airflow going into the engine, so everything depends on it opening and closing smoothly. If your motor isn't reacting the way it should, this is often a key place to look.. Key Features. • Controlled Air Intake Flow - Regulates airflow into the engine for smooth and responsive performance.. • OEM Fit Precision - Built to Yamaha specifications for proper alignment and seamless operation.. • Improved Throttle Response - Helps restore clean acceleration and consistent engine behavior.. • Integrated Assembly Design - Combines key intake components for reliable and efficient operation.. Compatibility. Compatible with select Yamaha outboar