Yamaha - Throttle Body Assembly Air Intake Component 6D8-13750-00-00. Overview. The Yamaha Throttle Body Assembly 6D8-13750-00-00 is a vital component that controls the amount of air entering your engine, directly influencing throttle response, fuel efficiency, and overall performance. This complete assembly ensures precise airflow regulation, allowing your engine to maintain the proper air-fuel mixture for smooth and efficient combustion. If the throttle body becomes dirty, worn, or faulty, you may experience hesitation, rough idle, or reduced power. Replacing the full assembly is often the best way to restore consistent performance.. Key Features. • Complete Throttle Body Assembly - Provides precise control of airflow into the engine.. • OEM Fit Precision - Manufactured to Yamaha specifications for seamless installation and reliable operation.. • Improved Engine Response - Helps restore smooth acceleration and consistent throttle performance.. • Durable Construction - Built to withst