Yamaha - Reed Set Intake Air Control 6E5-W0004-00-00. Overview. Reeds are one of those parts you don't see unless you're deep into the motor, but you definitely feel it when they're not right. I've worked on engines that wouldn't idle clean or had a lazy throttle response, and it came back to worn reeds. They control how air and fuel enter the engine, so they need to seal and react quickly. When they're fresh, the motor starts easier, idles smoother, and runs crisp.. Key Features. • Efficient Air Intake Control - Regulates airflow into the engine for proper combustion.• Improved Throttle Response - Helps deliver quicker and smoother acceleration.• Flexible Reed Material - Designed to open and close rapidly under engine demand.• Consistent Engine Performance - Supports stable idle and smooth running conditions.• Exact Yamaha Fitment - Matches factory specifications for proper sealing and operation.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing reed valve i