Yamaha - Oil Plug Engine Lubrication Component 7DX-E5363-00-00. Overview. Oil plugs are simple, but if they fail, things get messy fast. This is one of those parts I always check during routine service because even a small leak can turn into a bigger problem on the water. A solid, properly sealing plug keeps your oil where it belongs and your engine protected. It's a small piece, but it plays a big role in keeping everything running right.. Key Features. • Secure Oil Sealing - Keeps engine oil contained to prevent leaks and maintain proper lubrication.• Durable Construction - Built to handle heat, pressure, and repeated service intervals.• OEM Thread Fitment - Matches factory threads for a tight, reliable seal without cross-threading.• Service-Friendly Design - Allows for easy removal and reinstallation during routine maintenance.. Engine & Boat Compatibility. Designed for Yamaha outboard engines that utilize an oil plug as part of the lubrication system. Commonly used across a range o