Yamaha - Engine Gasket Sealing Component 61A-24564-00-00. Overview. Small sealing components play a big role in keeping a Yamaha outboard running clean and reliable. This genuine Yamaha gasket is designed to create a tight seal between critical engine components, helping prevent leaks and maintaining proper pressure where it matters. Over time, heat cycles and normal wear can cause gaskets to compress or degrade. Replacing worn gaskets during service helps maintain engine integrity and ensures y