Yamaha - Air Shroud Assembly Engine Cooling Component 7CH-12620-00-00. Overview. Air shroud assemblies are one of those pieces that keep everything running right without you noticing. I've seen engines run hotter or uneven just because airflow wasn't being directed properly. This assembly helps move air where it needs to go, especially around critical engine components. When it's all in place, the motor stays cooler and runs more consistently over long days on the water.. Key Features. • Complete Airflow Management - Directs cooling air across key engine components for proper temperature control.• Full Assembly Coverage - Provides complete protection and airflow routing in one integrated unit.• OEM Fit and Alignment - Matches factory design for proper installation and efficient airflow distribution.• Heat Control Support - Helps prevent overheating during extended operation and heavy use.. Engine & Boat Compatibility. Designed for Yamaha outboard engines that utilize an air shroud asse